This is the second time I _______ the Himalayas as a college student.
| A．climb | B．had climbed | C．climbed | D．have climbed |
He is talking so much about America as if he _____ there.
| A．had been | B．has been | C．was | D．has gone |
________ is impossible for us to offer him any help.
| A．This | B．It | C．That | D．which |
So excited was the winner that he couldn’t say any word to his feelings.
| A．expose | B．convey | C．display | D．deliver |
How dirty the floor is! You should have someone _____ it at least twice a day.
| A．mop | B．to mop | C．mopping | D．mopped |
Our neighbor offered to look after our baby while we were away, ____ was very kind of her.
| A．it | B．that | C．which | D．such |