31. ―Do you know ____?

   ―Next Monday.

   A. when will he come back                         B. when he will come back   

   C. when did he come back                           D. when he came back

30. We’ll have three days off if the work ____ today.

   A. finish                        B. can finish          C. was finished             D. can be finished

29. ―Is ____ on the bus now, monitor?

   ―No. Liu Dong isn’t here.

   A. someone                    B. anyone              C. everyone                  D. nobody

28. ―Excuse me. ____ did you get the book?

   ―On that shelf.

   A. Where                       B. How                 C. When                       D. Who

27. Look at the clouds. It ____ soon, I’m afraid.

   A. rain                           B. rains                 C. will rain                   D. rained

26. ―____ I return the book to library today?

   ―No, you needn’t. You can return it tomorrow.

   A. Can                         B. May                 C. Must                        D. Need

25. I live in ____ floor. What about you?

   A. five                           B. the five             C. the fifth                   D. fifth

24. ―Why is Sam so ____ today?

   ―Because he failed his math exam.

   A. happy                        B. exciting             C. sad                          D. tired

23. ―How long have you lived in Beijing?

   ―I ____ here since I was born.

   A. live                    B. am living                 C. lived                        D. have lived