I’m sorry, _________ I won’t be able to come tonight.
| A．for | B．and | C．but | D．then |
The villagers thought highly of the way we treated the beggar.
| A．which | B．where | C．why | D．that |
(2013·重庆模拟)—When did your brother begin to show his interest in medicine?
—It was a Saturday he noticed his classmate experimenting on a frog in the lab.
| A．that | B．what |
| C．when | D．which |
Last Sunday I climbed to the top of the hill near my home, I could see half of the city.
| A．that | B．where | C．which | D．there |
It is exactly the area racial conflicts arise now and then.
| A．where | B．that | C．which | D．why |
Encouraged by my science teacher, I set about my studies on developing my product, I hope I will succeed in applying for a patent(专利权).
| A．with whom | B．to whom |
| C．through which | D．for which |