Yesterday, Jane walked away from the discussion. Otherwise, she ____ something she would regret later.
| A．had said | B．said |
| C．might say | D．might have said |
It was so noisy that we hear ourselves speak.
A. couldn’t B. shouldn’t
C. mustn’t D needn’t
Have you ever heard of the trees that are homes animals both on land and sea?
| A．about | B．to |
| C．with | D．over |
Tom had to______ the invitation to the party last weekend because he was too busy.
| A．turn in | B．turn down |
| C．turn over | D．turn to |
Despite the previous rounds of talks, no agreement______ so far by the two sides.
| A．has been reached | B．was reached |
| C．will reach | D．will have reached |
I ______ have worried before I came to the new school, for my classmates here are very friendly to me.
| A．mightn’t | B．mustn’t |
| C．needn’t | D．couldn’t |