―Excuse me, Sir, but could you tell me how to go to the railway station?
―Sorry. You’d better ask, I’m afraid, ______ is a native.
| A．whom | B．who | C．whomever | D．whoever |
How long do you think it will be _______ scientists succeed in providing a cure for cancer?
| A．when | B．after | C．since | D．before |
I notice Linda is often absent from school because of illness. _______ she is not so healthy as she used to be?
| A．Why is it that | B．Is it why that | C．Why is | D．Is it why |
It was from only a few supplies that she had bought in the village ______the hostess cooked such a nice dinner
| A．where | B．that | C．when | D．which. |
Please do me a favor----_____ my friend Mr. Smith to Youth Theater at 7:30 tonight.
| A．to invite | B．inviting | C．invite | D．invited |
He made another wonderful discovery, ______ of great importance to science.
| A．which I think it is | B．which I think is |
| C．which I think | D．I think which is |
---What are you busy doing these days?
---____ the college entrance examination.
| A．Preparing for | B．To prepare for |
| C．To be preparing for | D．Prepared for |