His writing is so confusing that it’s difficult to make out ________ it is he is trying to express.
| A．that |
| B．how |
| C．who |
| D．what |
—Thank you very much for everything ．You’ve been so helpful.
—__．Just let me know if there is anything else I can do for you．
| A．With pleasure | B．The pleasure is mine． |
| C．Please don’t say so | D．No, thanks |
Please remind your grandpa to take medicine on time, for a man of his age ____be very forgetful．
| A．need | B．must | C．shall | D．can |
During the economic crisis, we should help those for ______life is far from easy．
| A．whom | B．whose | C．who | D．whoever |
Computers can do nothing．But once ______what to do, they show extraordinary power to do a great deal．
| A．to program | B．being programmed |
| C．programmed | D．having programmed |
_______ twice a year, whether it is a car or a bus or a
truck, is the rule that every driver must obey in this city．
| A．Being examined | B．Examining |
| C．Examined | D．Having been examined |