问题

You can go and play games with your friends when you finish your homework. But remember all the lights when you leave.[ ]

A: to switch off
B: to switch on
C: switching off
D: switching on

正确答案是：

同类题型

下列各句中没有语病的一句是

Do you know anything about the players of our school basketball team—Yes. They are _______ young boys between the age of thirteen and fifteen.

You seem to be familiar with London.— I ______ there for three yearsIt’s great to be back

Studiesshowthatpeopleare more_______tosufferfrombackproblemsiftheyalwayssitbefore computerscreensforlonghours.[ ]

I’m sorry I can’t help you solve the problem. –______________.