A proper approach to ________ your learning efficiency is of great significance to every student.
| A．improving | B．improve | C．be improving | D．having improved |
Harry is feeling uncomfortable. He _____ too much at the party last night.
| A．could drink | B．should drink |
| C．would have drunk | D．must have drunk |
It remains to be seen _______the newly formed committee’s policy can be put into practice.
| A．that | B．which | C．what | D．whether |
— How far can you run without stopping?
— ________. I’ve never tried.
| A．Don’t mention it. | B．That’s all right. | C．I have no idea. | D．Go ahead. |
Anyone, once _______ positive for H7N9 flu virus, will receive free medical treatment from our government.
| A．to be tested | B．being tested | C．tested | D．to test |
My uncle hasn’t been able to quit smoking, but at least he has_________ .
| A．cut out | B．cut down | C．cut up | D．cut off |