题目内容
4.Everyone is supposed to __________(积极参力卩) protecting wild animals.
4. take an active part in
2.不管你相信还是不相信，这是真的。
__________________，it is true.
4. he failed in the drive test,he never gave up.
10. When I passed by,he seemed __________(write) a letter.
6.The police haven't found the exact s__________ where the girl was murdered.
6.We agree that the problem is__________(worth) to be discussed.
5. He had given his life__________ save that girl.
6.This is the teacher whom we have learnt a lot.
3.他三天没睡了，怪不得他很疲倦。
He hasn't slept at all for three days. he is tired out.
