题目内容

(选择适当的动词并用其正确的形式填空)

learn care pollute spend take

(1)

It _______ me half an hour to work out this problem last Friday.

(2)

I don’t think it’s right to give up _______ any subject.

(3)

We provide homes for many animals, and help to educate the public _______ for them.

(4)

Some of the swamps _______ ten years ago.

(5)

I have just _______ two months learning how to do first aid.

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