问题

We should________the lights when we leave our classroom because we must save electricity. [ ]

A: switch on
B: switch over
C: switch off
D: switch through

正确答案是：

同类题型

Could you tell me ________ A writer.

I don’t think he could have done such a stupid thing last night,_____? [ ]

She won’t go to library tomorrow ____

The Grand Theatre islocatedon the cornerof _________ is called the People’s Square.

If you go there alone after dark you mightget _____