We shouldn’t spend our money testing so many people, most of ___are healthy.
| A．whom | B．what | C．which | D．that |
The continuous rain ______ the harvesting of the wheat crop by two months.
| A．set back | B．set off | C．set aside | D．set out |
--Do you think you will give me a hand in time of trouble?
--I’d like to do something for you ______ everything you’ve done for me.
| A．in exchange | B．in turn | C．in return for | D．in terms of |
The bus hit against a tree in the fog and ______to the deep valley，with ten passengers killed and twenty wounded.
| A．down did it roll | B．down rolled it |
| C．it down rolled | D．down it rolled |
______in a science competition, the three students were awarded scholarships totaling $ 21, 000.
| A．To be judged the best | B．Judged the best |
| C．Having judged the best | D．Judging the best |
-----Have you got used to the Chinese food, Robert?
-----Yes, but I don't like ______ when a Chinese host keeps serving me the food I don't like.
| A．this | B．that | C．those | D．it |