About _______ gene-targeting drugs are already in testing pipeline. It won’t be long ______ they are put into effect.
#14337
A
two dozen; before
B
two dozens; that
C
two dozens of; before
D
dozens; that
推荐题目
They are broadening the bridge to ________ the flow of traffic.
#12372
A
put off
B
turn on
C
speed up
D
work out
Sam got wounded in the Vietnam War and he still has a hole ______ in his leg.
#14157
A
half the size of a coin
B
a size half of a coin
C
half the size as much as a coin
D
as much as half coin