4.Can you imagine this shy _______ at the concert?
| A．girl to sing | B．girl to be singing | C．girl’s singing | D．girl to have sung |
I was really anxious about you. You _______ home without a word.
| A．mustn’t leave | B．shouldn’t have left | C．couldn’t have left | D．needn’t leave |
—We weren’t sure which way to go. In the end we turned right.—You _____ the wrong way. You _____ left.
| A．went; should have turned |
B．have gone; must turn |
C．went; would have turned |
| D．had gone; must have turned |
I lived with my sister this summer and didn’t have to pay rent. So I _____ save most of my salary.
| A．could | B．would | C．was able to | D．should |
He _____ if he works hard for the people.
| A．shall praise | B．shall be praised | C．will praise | D．will be praised |
—_____ he start at once or wait for a while?—Let him start at once.
| A．Will | B．Would | C．Does | D．Shall |