I have experienced quite a number of cases ______ I really wanted to help but could not find anything to _______.
| A．when; put on my hands | B．that; put my hands on |
| C．where; put my hands on | D．in that; put on my hands |
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 |