—Are you sure you have to? It’s been very late.
—I don’t know ______ if not now.
A. where can I do itB. why did I do it
C. when I can do itD. how I will do it
I ______ use a clock to wake me up because at six o’clock each morning the first train passes by my house.
A. couldn’t B. mustn’t
C. shouldn’t D. needn’t
More Hope Schools have been ______ in China to help children to return to school in the past few years.
A. set upB. put away
C. given up D. sent up
—Unluckily, you couldn’t come to the picnic with us. It was so much fun there. You must come next time.
—No, thanks. I don’t think I ______ any fun.
A. haveB. will have
C. have hadD. was having
—Are you going out? It’s windy and cold outside.
—I know, but it’s the last day to buy tickets to the basketball final, ______ I must go.
A. ifB. or
C. so D. unless
The English-Chinese dictionary ______ my father bought for me many years ago is still of great value.
A. whenB. that
C. whoD. where
