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
She insisted that she ______ not guilty, but we insisted that she ______ into prison.
#12462
A
was; be put
B
be; was put
C
should be; was put
D
was; should put
I have read ______ books and I’ve learned ______ .  
#14420
A
a great deal of; a lot of
B
a great many; a lot
C
a large number of; lots of
D
plenty of; a lot of
 It ________ me how we could improve the situation.
#10709
A
struck
B
approached
C
accessed
D
occurred