The head of the company promised to deal with matters of this sort he returned to his office.
| A．until | B．while |
| C．at the time | D．the moment |
——Excuse me, _______?
——That’s $50 altogether, sir.
| A．how much should I give you |
| B．but can I take your order |
| C．could I have the bill, please |
| D．would you please take the money |
The time and effort he has devoted during the past few years ______ trees in that remote area is now considered to be of great value.
| A．plant | B．planting | C．to plant | D．to planting |
When and where to build the new factory ___ ________ yet.
| A．is not decided | B．are not decided |
| C．has not decided | D．have not decided |
The journalists at home and abroad are greatly impressed by the fact that _______ volunteers from all over the country are working hard to build _________ new Yushu.
| A．/; a | B．the; / | C．/; / | D．the; a |
There is a new problem involved in the popularity of private cars________road conditions need________.
| A．that；to be improved | B．which；to be improved |
| C．where；improving | D．when；improving |