单项选择题

If only I （） hard in the past few months! But I didn’t work hard enough and failed the maths examination.

A. work
B. worked
C. have worked
D. had worked

<上一题 目录 下一题>
热门 试题

单项选择题
The government cannot operate effectively （） it is free from such interference.

A. so long as
B. so that
C. unless
D. because
单项选择题
If it （） tomorrow, the basket ball match has to be canceled.

A. rain
B. rains
C. rained
D. will rain
相关试题