It was decided to _____ the search when there was no hope of finding the missing girl alive.
| A．call off | B．take up | C．keep off | D．ring up |
He must have finished the work by the end of last month, _______ he?
| A．mustn't | B．hadn't | C．didn't | D．hasn't |
Despite her illness, she had lost _______ of her enthusiasm for life.
| A．not anyone | B．none | C．Nothing | D．not all |
_______ the task on time, he was fired by the boss.
| A．Not completed | B．Not having completed |
| C．Not have completed | D．Not being completed |
I admit that there are problems, _______I don't agree that they cannot be solved.
| A．While | B．If | C．In case | D．Before |
—Why, Jack! Someone seems to have called you over there.
—Yes? I _______ that.
| A．am not realizing | B．haven't realized | C．didn't realize | D．don't realize |