His job at the hospital did not pay much, so he found another _____.
| A．on the rise | B．on the spot | C．on the decline | D．on the side |
“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 |
“I called you yesterday. A woman answered, but I didn’t recognize her voice.” “Oh, it _____ my aunt Jean.”
| A．must be | B．must have been |
| C．might be | D．can have been |
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 |