And we’ll finish the work ahead of time.
| A．An hour earlier | B．If we start an hour earlier |
| C．Starting an hour earlier | D．Started an hour earlier |
The streets are all dry . It ____ during the night .
| A．can''t have rained | B．mustn''t have rained |
| C．couldn''t rain | D．shouldn''t have rained |
Water ____ be changed into vapour but it ____ be heated to its boiling point .
| A．may ; can | B．can ; must | C．may ; needn''t | D．must ; may |
____ you like something to drink now ?
| A．Do | B．Will | C．Can | D．Would |
I ____ take a job . No one ____ stop me .
| A．will ; shall | B．will ; may | C．should ; will | D．shall ; may |
“When ____ he leave the hospital ? ”I asked the doctor .
| A．will | B．shall | C．can | D．may |