．—This math problem is too difficult. Can you show me _______, Dad?
—Sure.
| A．what to work out | B．what to work out it |
| C．how to work it out | D．how to work out it |
—I would like you to talk about the Great Wall.
—I’m sorry, but _________ Jack _________ I have been there.
| A．either; or | B．neither; nor |
| C．both; and | D．not only; but also |
—He’s already back to Australia, _________?
— _________. He is on a visit to Shanghai.
| A．isn’t he; No | B．hasn’t he; Yes |
| C．isn’t he; Yes | D．hasn’t he; No |
—Have you decided where to spend your summer holiday?
—Not yet. We _________ go to Qingdao.
| A．must | B．should | C．need | D．may |
Beijing is _________ capital of China and it is _________ city with many places of interest.
| A．a; a | B．a; the | C．the; a | D．the; the |
It’s very warm here in the room. You’d better ______ your coat.
| A．take in | B．take away | C．take out | D．take off |