To keep healthy ,Mr. Lin __________ climbing as a regular form of exercise after he retired .
| A．took up |
| B．took on |
| C．made up |
| D．made in |
Half of them,____ is 50, can speak fluent Chinese.
| A．that | B．which | C．who | D．it |
—Do you regret not having gone abroad?
—Why should I? I ____as much, but I’m glad to devote myself to our motherland.
| A．didn’t earn | B．don’t earn | C．hadn’t earned | D．haven’t earned |
---Did you visit the famous museum ?
---No. We ______ it. But we spent too much time shopping.
| A．can't have visited | B．could have visited |
| C．must have visited | D．shouldn't have visited |
A modern university has been set up in ______ used to be a deserted land.
A which B. that C. what D. where
My parents used _____ they had to get a new car for my brother.
| A．what | B．which | C．all what | D．不填 |