The great changes _______ have taken place _______ carrying out the economic reform in our country.
#25096
A
may not; unless
B
could not; without
C
never; but for
D
would; besides
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I haven't seen her ____ the past few years.
#28879
A
since
B
in
C
before
D
after
China has been pushing the reform of public hospitals________ all its citizens. 
#26376
A
in charge of
B
for the purpose of
C
in honor of
D
for the benefit of
The opening ceremony has been put off_____ the bad weather.
#25632
A
in case of
B
in spite of
C
instead of
D
because of