问题

Only in this way _______ to make improvement in the operating system.

A:you can hope
B:can you hope
C:you did hope
D:did you hope

正确答案是：

同类题型

read the Frog by Moyan,haven’t you—Yes,I_______second time and I got a betterunderstanding

David has studied hard since last term. — ________ , and ________.

time I got to the theatre, the play__________ for ten minutes

.He was in poor health, so the doctor ___________ him to drink wine.