BÀI TẬP BỔ TRỢ VÀ NÂNG CAO - UNIT 6
I. Fill in the blank with one suitable word
Traffic lights
The first traffic signal was invented by a railway signaling engineer. It was installed
outside the Houses of Parliament in 1868. It (1)… like any railway signal of the time, and
was operated by gas. (2)…, it exploded and killed a policeman and the accident
discouraged father development until cars became common.
Modern traffic lights are an American invention. Rea-green systems were installed in
Cleveland in 1914. Three-color signals, (3)… by hand from a tower in the (4)… of the
street, were installed in New York in 1918. The first lights of this (5)… to appear in
Britain were in London, on the junction between St.James’s Street and Piccadilly, in
1925. Automatically (6)… were installed (7)… year later. In the past, traffic lights were
(8)… . In New York, some lights had a statue on top. In Los Angeles the lights did not
just change silently, but would ring bells to (9)… the sleeping motorists of the 1930s.
These are gone and have been (10)… by standard models which are universally adapted.
II. Choose the best answer that fits the blank:
1. A lot of houses in our neighborhood … repairs.
2. I didn’t realize you were a foreigner. Your … of English is very good.
3. Oh, dear, I see we’ve … coffee. Do you mind drinking tea?
4. I have a very bad … for names
5. She is … to leave as soon as possible
6. The coins are … to be over a thousand years old.
III. Use the correct form of verbs
Unable to find his car in the street where he usually (park) it when he is at the office.
George Hunt, of Lexington Road, (phone) the police and (report) it (steal). After some
time they (come) (write) a report. As they (write) down the details, Mrs. Doreen Hunt,
Mr. Hunt’s wife, (arrive) in the car. She (take) it (go) shopping without telling her
husband.
IV. Combine these two sentences using relative clause
1. Shakespeare wrote 37 plays. The most famous of the plays are “Hamlet”,
“Othello”…

7. This diamond necklace is worth. It is made of glass
8. Because of films, records, television and radio, teenagers are aware of that their
contemporaries are doing all around the English-speaking world
VII. Rewrite the sentences
1. They left early because they didn’t want to get caught in the traffic
They left early in order to
2. Why didn’t they tell me about these changes earlier?
I should
3. Nobody plays this piece as beautifully as he does
He plays the piece
4. Thanks for reminding me about this meeting – otherwise I would have missed it
If you
5. I don’t normally go into town by car
I am not
6. I would like to express my thanks for everything you have done for me.
I’d like to say how thankful
VIII. Choose the word to fill in the blanks (you can change the form of words if
necessary)
keep track of
take care of
take advantage of
set fire to
make room for
get in touch with
pay attention to
keep an eye on
put an end to
fall in love with
1. Who will … Jean’s cat while she is away?
2. I’ve been trying to … him all day

8. What’s the matter?
9. You are driving on the wrong side
10. My dear sir, you must keep to the left. The right side is left
XI. Read and answer the funny question:
One day a little boy called Bobby wanted a liter of water. He only had two cans for
measuring the water. One can held five liters, and the other held three liters. He was
surprised to find that he could measure a liter pf water with the two cans. This is how he
did it.
He filled the three-liter can and then poured the water into the five-liter can. Then he
filled the three-liter can till it was full. The five-liter can needed two liters to fill it, so
there was then a liter left in the three liter can.
The next day, Bobby wanted two liters of water. He still only had the same two cans
for measuring. How did he get two liters by using only the two cans?
ANSWER FOR UNIT 6
I. 1. looked 2. however 3. operated 4. middle 5. type 6. signals 7. a 8. special 9. wake
10. replaced
II. 1B 2A 3C 4B 5B 6B
III. 1. parks 2. phoned 3. reported 4. had been stolen 5. came 6. to write 7. were
writing 8. arrived 9. had taken 10. to go
V. 1. exception – sufficient – to ensure – growth – overeat
2. is getting – officer – consumption
VI. 1. but also alcohol 2. how to gather 3. relatively 4. specifically 5. other city 6. X
but 7. worthless 8. what
VII. 1. They left early in order to avoid getting caught in the traffic
2. I should have been told about these changes earlier
3. He plays this piece more beautifully than anyone
4. If you hadn’t reminded me about this meeting I would have
5. I am not used to going into town by car
6. I’d like to say how thankful I am for everything
VIII. 1. take car of 2. get in touch with 3. take advantage of 4. pay attention to 5. keep