2019年mpacc考试英语真题——介词和介词短语2630

{01} Something must be done to prevent our city ____ by thick smoke.

A.to be polluted

B.from polluting

C.from being polluted

D.polluting

解析：略
本题选C。
{02}He will come ____ three days.                           

A.before

B.after

C.in

D.later

解析：略
本题选C。
{03}It happened ____ the Long March.          

A.during

B.in

C.at

D.for

解析：略
本题选A。