I find ___________ possible for ___________ to work out the math problem if they can cooperate.
| A．it;me |
| B．that；me |
| C．it ； them |
| D．that ； them |
It is reported that China has created the first man-made sun in the world recently, ______ ?
| A．isn’t it | B．is it | C．hasn’t it | D．has it |
----- Has Mary finished writing her article ?
----- No, and it _____ before class was over.
| A．should be finished | B．should finish |
| C．should have finished | D．ought to have been finished |
I really _____ thank you enough. It’s been an amazing day.
| A．needn’t | B．should | C．must | D．cannot |
16. The computer program is a puzzle to me. The more I think of it, the more questions I think of _____.
| A．ask | B．asked | C．being asked | D．to ask |
Realizing I would be late , I quickly dressed my son and _____ my bag, went to work.
| A．carried | B．carrying | C．to carry | D．having carried |