How long do you think ______ the computer company brings out a new product?
A. it will be before B. will it be until C. will it be when D. it will be that
In the reading room, we found her____ at a desk, with her attention____ on a book.
A. sitting; fixing B. to sit; fixed C. seating; fixing D. seated; fixed
______ , the players began the game.
A. Having taken our seats B. Taking our seats
C. Being taken the seats D. After we had taken our seats
— I phoned you yesterday morning. A girl answered, but I didn’t recognize the voice.
— Oh, it ____ my younger sister. She was in my room at that moment.
A. must have been B. should have been C. could have been D. may have been
The old woman who______in the deserted house alone for ten years has been settled in a nursing home now.
A. lived B. has lived C. had lived D. has been living
The new buyer identified a dozen new sources for the material, ___________ proved to be reliable．
A. most of them B. most of which C. most of whom D. most of those
