问题

The computer system _______suddenly while he wassearching for information on the Internet.

A:broke out
B:broke up
C:broke in
D:broke down

正确答案是：

同类题型

I will carry out the plan _____ there is much difficulty ahead.

Be ___________ —you can’t expect meto finish all this work in so little time.

These candies________very sweet, and we can get some.

John received an invitation to dinner, andwith his work____, he gladlyaccepted it[ ]

Tommy plays computer games ________.