---When will the expert come and give the lecture on economic development?---Not until our program_______.
#99532
A
is approving
B
is to approve
C
has been approved
D
will be approved
推荐题目
 We must ________ every chance we have to improve our communicating ability.
#99651
A
take care of
B
get along with
C
make use of
D
think highly of
 The hotel wasn’t particularly good. But I _________ in many worse hotels. 
#104596
A
was staying
B
stayed
C
would stay
D
had stayed
The environment will be further polluted unless some measures _____.
#100612
A
are taken
B
will be taken
C
are being taken
D
should be taken
Jack doesn’t smoke now, but he _______ for almost twenty years.
#101447
A
was smoking
B
had smoked
C
has smoked
D
smoked