I happened_______with him when he was hit by a stone.
| A．I was talking | B．talking | C．to talk | D．to be talking |
Most of her spare time ______ , she still kept on her research in the laboratory.
| A．occupied | B．had been occupied |
| C．to be occupied | D．was occupied |
He _____ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside.
| A．should | B．must | C．wouldn’t | D．can’t |
The police are trying to find out the ____ of the woman murdered in the bathroom．
| A．evidence | B．characteristic | C．status | D．identity |
—Didn’t the guard see him breaking into the bank?
—No, he ______ in the other direction.
| A．was looking | B．had looked | C．looked | D．is looking |
He said it was this classroom _______ he found his lost watch and _____ he would take good care of it from then on.
| A．where; / | B．when; what | C．that; what | D．where; that |