________, he knows a lot of things.
| A．A child as he is | B．Child as he is | C．A child as is he | D．Child as is he |
—Jones! Roy has broken the glass.
—Such things happen.
| A．Doesn’t matter. | B．How come? |
| C．What a pity! | D．What has become of him? |
The experiment shows that proper amounts of exercise, if ___ regularly, can improve our health.
| A．being carried out | B．carrying out | C．to carry out | D．carried out |
The discovery of gold in Sahara Desert led thousands to believe that a fortune________.
| A．is made | B．was to be made | C．would make | D．had made |
—Beg your pardon, but I didn’t quite catch what you said.
—Oh, I to myself.
| A．have talked | B．am talking | C．had talked | D．was talking |
—Does your uncle still smoke?
—He given it up. It’s two years ever since he .
| A．can’t have; smoked | B．may have; smoked |
| C．should have; has smoked | D．should have; didn’t smoke |