Experts believepeople can waste less food by shopping only when it is necessary.
| A． | why | B． | where | C． | that | D． | what |
_______________you call me to say you’re not coming, I’ll see you at the theatre.
| A． Though | B． Whether | C． Until | D． Unless |
After she considered the problem, she got a tall box to stand ________.
| A． on | B．up | C．above | D．by |
The changes in the city will cost quite a lot, ___________they will save us money in the long run.
| A． or | B．since | C．for | D．but |
—I hear Jane has gone to the Holy Island for her holiday.
—Oh, how nice! Do you know when she______________?
| A． was leaving | B． had left | C． has left | D． left |
Selecting a mobile phone for personal use is no easy task because technology____ so rapidly.
| A． is changing | B．has changed | C．will have changed | D．will change |