When he was alive, the old scientist used to say that knowledge ____ from practice and he gained his experience by doing a lot of practical work.
| A．was coming | B．had come | C．comes | D．would come |
You look frozen．Sit down by the fire and Iyou some hot tea．
| A．make | B．was making | C．made | D．will make |
It s a good idea to get students to retell a storytheir own words．
| A．of | B．in | C．by | D．through |
—I don’t care for baseball.
—How can you say you don’t like somethingyou’ve never even tried it!
| A．till | B．after | C．unless | D．when |
Lifting off at sunrise, the hot air balloon goes wherever the windblow.
| A．may | B．must | C．need | D．should |
—Where on earth have they gone?
—I have no idea, but I wish I .
| A．know | B．knew | C．would know | D．would have known |