Tom is weak in physics. He always feels _______ before he takes a physics test.
| A．interested | B．comfortable |
| C．nervous | D．proud |
Please __________ the light when you leave the classroom.
| A．turn on | B．turn up | C．turn off | D．turn down |
When you go _________ the street, you must be careful.
| A．crossing | B．cross | C．across | D．pass |
I ______ an hour finishing my homework yesterday.
| A．cost | B．paid | C．spent | D．took |
The shoes are beautiful. Please ___________
| A．try it on | B．try on it | C．try them on | D．try on them |
You are too tired, please stop _______.
| A．to work | B．work | C．working | D．worked |