It is obvious to the students____ they should get well prepared for their future (2009•天津）
| A．as |
| B．which |
| C．whether |
| D．that |
_____ life exists on any other planet in the solar system still remains a question.
| A．Why | B．Whether | C．How | D．Where |
Later, the naughty boys _____ to the English teacher for having played a trick on her the other day.
| A．apologized | B．introduced | C．reminded | D．stared |
The company is deep in _____, so you’d better avoid dealing with it.
| A．benefit | B．thought | C．debt | D．strength |
—I met your uncle on my way to school this morning.
—Ah? You _____ be joking. He flew to Germany yesterday evening!
| A．might | B．should | C．could | D．must |
It was almost midnight when a big fire _____ in the neighborhood.
| A．blocked out | B．turned out |
| C．broke out | D．died out |