Now there are some laid-off workers delightedly taking up the work to patients in hospitals．
| A．look on | B．take on | C．wait on | D．feed on |
. I tried to call on you last week , but your dog simply ____ not let me come through the gate.
| A．could | B．would | C．might | D．should |
To read newspaper before going to bed seemed to me a rule ____.
| A．to never break | B．never to have broken |
| C．never to be breaking | D．never to be broken |
---You seemed to have been impressed by his songs.
---Well, not exactly so. It was his way of singing____ his voice that really impressed me.
| A．rather than | B．as well as | C．but also | D．together with |
Knowing how long the test would last, the students who finished ____ and waited until the end of the exam.
| A．settled back | B．settled in | C．settled up | D．settled on |
. --- He has to finish the experiment today. He must be in the lab,________?
---That s quite possible.
| A．mustn't he | B．won't he | C．doesn't he | D．isn't he |