The Arabian Nights___well-known to literature lovers
| A．is being |
| B．are |
| C．were |
| D．is |
—Let's go Dutch for this supper, OK?
—No，________this time, as a reward for all your help.
| A．it's up to you | B．it's my treat |
| C．let's talk about it | D．it doesn't matter |
At the United Nations Climate Change Conference, the UN Secretary General points out that，________， the climate situation will get worse and worse.
| A．if not dealing with properly |
| B．unless dealing with properly |
| C．if properly dealt with |
| D．unless properly dealt with |
—Who should be responsible for the accident?
—The boss, not the workers. They just carry the orders________.
| A．as told | B．as are told |
| C．as telling | D．as they told |
I can't thank you _______ much because without your help I _______ have won the first prize.
| A．too; wouldn't | B．very; shouldn't |
| C．that; might not | D．so; couldn't |
Had I known about this computer program, a huge amount of time and energy________.
| A．would have been saved | B．had been saved |
| C．will be saved | D．was saved |