I __________ very proud of myself after the quiz, __________ how easy it was and how I was sure to get a good grade.
| A．must have sounded; to say | B．must sound; saying |
| C．must have sounded; saying | D．must sound; to say |
----Let’s ________some dumplings right now.
---- OK. I will cut up the meat first.
| A．eat | B．buy | C．heat | D．make |
When Mary came, I _____ on the piano.
| A．is playing | B．plays | C．was playing | D．played |
Cars, buses and bikes ________ stop when the traffic lights turn red.
| A．can | B．may | C．must | D．need |
_______ we got to the station, the train had left already.
| A．If | B．Unless | C．Since | D．When |
Tom kept quiet about the accident _____ lose his job.
| A．in not order to | B．in order not to |
| C．in order to not | D．not in order to |