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27. Prices ___ considerably since this time last year.
C. raised
A. have raised B. rose
@ have risen
from 49% in 1980 to nearly
28. ThE number of working women in China
65% today.
@ has increased
A. has been increasing
C is increasing
D. have increased
two miles and a half, and now she feels exhausted.
JI}. She
B. was running @ has run
A.--;:�ns @�- has been running
}t). Sor 1cthing tells me that you __ to a single word I ___ in the past ten minutes.
{J. haven't been listening - have said
� haven't listened- had said
C. hadn't listened- said
D. didn't listen- was saying
31. I low many of those chocolates ___ today?

37. Thi msands of antibiotics __, but only about thirty are in common use today .
.A. have