2019年mpacc考试英语真题——介词和介词短语2756

{01}There are 2100 students __ all in our school.

A.for

B.at

C.by

D.in

解析：略
本题选D。
{02_______ , I lost heart in English learning, but my teacher often said to me, “Keep on working hard and you’ll succeed_______”.

A.At a time, in time	B.At a time, on time
C.At one time, in time	D.At one time, on time

解析：略
本题选C。