He soon made _____ clear why he had asked for a conference.
| A．that | B．it | C．this | D．one |
34、It must have rained last night, ___________?
| A．mustn’t it | B．can’t it | C．hasn’t it | D．didn’t it |
33. It is surprising that he_______have been such foolish, he never made such a mistake.
| A．must | B．could | C．should | D．Might |
32. －Kate, what is wrong with your pen again? There is not enough time.
－The ink_____come out.
| A．doesn’t | B．won’t | C．hasn’t | D．can’t |
31. They arrived at a farmhouse, in front of ___________sat a small boy.
| A．whom | B．where | C．which | D．That |
30. It looks ______ you are ill. You should go to see the doctor.
| A．as | B．as though | C．as well | D．even though |