--- Shall I give you a hand as your case is so heavy?
----Thank you._____.
| A．Of course you can | B．It’s up to you. |
| C．If you can | D．It couldn’t be better. |
If you have any doubts about your health, you’d better______ your doctor at once.
| A．convince | B．consult | C．avoid | D．affect |
Tom had tothe 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 |
______ for two days, Steve managed to finish his report on schedule.
| A．To work | B．Worked |
| C．To be working | D．Having worked |
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 |