You ought to _______ us with rice and dishes of vegetables, but you didn't.
| A．provide | B．have given | C．offer | D．have served |
“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 |
I _______ have met him a long time ago. Both his name and face are very familiar.
| A．may | B．can | C．would | D．should |
Are you still here？ You ______ home hours ago.
| A．should go | B．should have gone |
| C．might go | D．may have gone |
As she’s not here, I suppose she _____ home.
| A．must go | B．must have gone |
| C．might go | D．might be going |
You _____ him the news; he knew it already.
| A．needn’t tell | B．needn’t have told |
| C．mightn’t tell | D．mightn’t have told |