—Please let me know where David is. I couldn’t find him anywhere.
—Well, he _____have gone far—his coat’s still here.
| A．shouldn’t | B．mustn’t | C．can’t | D．wouldn’t |
“Why didn’t she come to the meeting yesterday？” “I’m not so sure. She ______ ill.”
| A．should be | B．should have been |
| C．must be | D．might have been |
He ______ the test again, in which case, his mother will be very disappointed.
| A．might fail | B．must have failed |
| C．should fail | D．could have failed |
I didn’t see her in the meeting room this morning. She ______ have spoken at the meeting.
| A．mustn’t | B．shouldn’t |
| C．needn’t | D．couldn’t |
They often go to the restaurants for meals. They _____ be very poor.
| A．mustn’t | B．can’t |
| C．may not | D．needn’t |
“Shall we go shopping？” “Sorry, we _______ buy anything now because none of the shops are open.”
| A．mustn’t | B．needn’t |
| C．can’t | D．shouldn’t |