—How does the Internet ____us?
—By sharing information free of charge．
| A．educate | B．improve | C．limit | D．benefit |
Mary won’t keep slim ______she takes exercise every day.
| A．unless | B．if | C．when | D．or |
____I will go abroad for further study or not is my top concern these days.
| A．If | B．Whether | C．what | D．where |
---Would you mind my sitting here?
--- ______. It’s for my girl friend.
| A．Not at all. | B．Never mind. |
| C．Better not. | D．Of course not. |
—Do you know the newly appointed CEO?
--__________.
| A．I’ll check it |
| B．Only that there is one |
| C．More often than not |
| D．It will come to me |
Mr. Smith let off upon me the speech he_______ to make all along.
| A．had died | B．died |
| C．was dying | D．had been dying |