—Mary broke up with me!
—You_ _have forgotten about the Valentine's Day．
| A．shouldn't | B．couldn't | C．needn't | D．mustn't |
It was ______ of you not to give others a ride in your new car.
| A．jealous | B．unfair | C．greedy | D．mean |
Lily’s mobile phone was left in a taxi accidentally, never ______ again.
| A．to find | B．to be found | C．finding | D．being found |
At first the institute refused to purchase(购买) the experiment instrument, but this decision was ______ changed.
| A．occasionally | B．consequently | C．backwards | D．afterwards |
The shy girl felt ______ and uncomfortable when she could not answer her teacher’s
questions.
| A．amazed | B．awkward | C．curious | D．amused |
Don’t get upset—I was only ______. .
| A．amusing | B．teasing | C．pretending | D．cheating |