Experts say walking is one of the best ways for a person to _____ healthy.
| A．preserve | B．stay | C．maintain | D．reserve |
Having been attacked by terrorists, ______________.
| A．doctors came to our rescue |
| B．the building eventually fell in |
| C．relief aid kept pouring in |
| D．warnings quickly got round |
Mr. Smith’s doctor suggested him_______ cold food these days.
| A．not eat | B．not eating |
| C．not to eat | D．didn’t eat |
After five days’ climbing in the mountain, they reached ____ they thought was the place they’d been dreaming of.
| A．that | B．where |
| C．which | D．what |
—So when did you meet Joan?
—It was last Sunday _______ she came to visit my sister.
| A．that | B．since |
| C．when | D．before |
One of our rules here is that every studentwear school uniform while at school．
| A．might | B．could |
| C．shall | D．will |