问题

Finally, save your document before you________ your computer.

A:turn on
B:turn up
C:turn off
D:turn down

正确答案是：

同类题型

1Don’t get stressed _____.It will make you sick.

Lily is ________ than Lucy.

Betty’s never seen a three-D movies,

The child said he had ______ the pen on the desk, but I thought he ______ to me .

Listen! Kate is singing in the next room.— It ______ be Kate. She has been on business in Hong Kong.