Susan started to clean the room； Lily was preparing lunch．
| A．however | B．but | C．meanwhile | D．when |
—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 |
“I suppose you _____ that report yet？” “I finished it yesterday, as a matter of fact.”
| A．didn’t finish | B．haven’t finished | C．hadn’t finished | D．wasn’t finishing |
I tried to phone her, but even as I _____ she was leaving the building.
| A．phoned | B．would phone | C．had phoned | D．was phoning |
The students _______ busily when Miss Brown went to get a book she _______ in the office.
| A．had written, left | B．were writing, has left | C．had written, had left | D．were writing, had left |
I think you must be mistaken about seeing him at the theatre； I’m sure he ____abroad all week.
| A．is | B．was | C．has been | D．had been |