They had camped once before, ____ they knew what to take.
| A．because | B．now | C．so | D．since |
．The theory is true _______ the hotter a body is, the more energy it gives off.
| A．that | B．when | C． which | D．what |
The desks and seats can be ________ to the height of any child．
| A．devoted | B．adjusted | C． accustomed | D．adopted |
—I saw Tom drinking alone just now.
—But as far as I know, he ________ little.
| A．drinks | B．is drinking | C． has drunk | D．had drunk |
The teacher suggested we do the exercises with great ________ though they were easy.
| A．expectation | B．caution | C． ambition | D．assumption |
When it comes to repairing refrigerators, Paul is superior ________ Bob．
| A．on | B．at | C． by | D．to |