It's dark, Mum ___ be waiting for my return.
| A．can | B．should | C．must | D．may |
Nancy is _______ dancing, and she keeps dancing till midnight every day.
| A．curious about | B．crazy about |
| C．worried about | D．concerned about |
Bruce, I can’t stand _______ near Mike. He refuses _______ talking with others in class.
| A．sitting, stopping | B．to sit; stopping |
| C．sitting; to stop | D．to sit; to stop |
The moment I got back to the classroom, I found I _______ my jacket on the playground.
| A．left | B．had left | C．have left | D．was leaving |
Studying in our newly-built school is so wonderful a period _____ every one of us will treasure forever.
| A．that | B．as | C．which | D．when |
--- Can you join us for the party to be held by old friends this weekend?
--- Awfully sorry. It is one year since I _____ in China.
| A．lives | B．lived |
| C．live | D．will live |