If this were not so, they __________ to migrate abroad either temporarily or permanently.
| A．were choosing | B．would not choose |
| C．have chosen | D．will not choose |
A new school was _____ up in the village last year.
| A．held |
| B．set |
| C．sent |
| D．brought |
Someone called me up in the middle of the night, but they hung up _____ I could answer the phone.
| A．as |
| B．since |
| C．until |
| D．before |
Peter’s mother kept telling him that he should give up smoking, but _____ didn’t help.
| A．he |
| B．which |
| C．she |
| D．it |
It’s quite different from _____ I read last month.
| A．that |
| B．which |
| C．the one |
| D．the one what |
Three-fourths of the homework _____ today.
| A．has done |
| B．has been done |
| C．have done |
| D．have been done |