Years ago we didn’t know this, but recent science _______ that people who don’t sleep well soon get ill.
| A．showed | B．has shown | C．will show | D．is showing |
You’d better put things back______. Otherwise, it will be difficult to find them.
| A．all over the place | B．out of place | C．in place | D．to the place |
It is_____the pupils do in their spare time_____ really______ them to take their place in society as citizens when they grow up.
| A．what; that; prepare | B．that; what; prepares |
| C．what; that; prepares | D．that; what; prepare |
The tower_____ in the 1800s is the oldest building in this area.
| A．to be completed | B．being completed |
| C．completed | D．Completing |
The computer system ____suddenly while he was searching for information on the Internet.
| A．broke down | B．broke out | C．broke up | D．broke in |
Linda was in____ dilemma when she was required either to complete the dangerous travel before____ deadline or to stay where she was forever.
| A．the; a | B．a; 不填 | C．the; the | D．a; the |