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根據句意及漢語提示完成句子：

1．His father is a _________（知識淵博的）man．He knows a lot we don't know．

2．We should have the habit of _________（回收利用）the waste things such as wastepaper，bottles，plastic bags and so on．

3．During the long vacation，we are planning to take part in some _________（社會）activities．

4．By end of this _________（世紀），We'll have robots in our house to help us do housework．

5．All the boys were _________（精疲力竭的）after they climbed up to the top of the mountain．

根據對話內容，用方框內所給的句子補全對話，其中有兩項是多余的。

（A girl student meets her English teacher Miss Wang at the bus station after the winter vacation begins．S= the girl student; W=Wang）

S: Hello, Miss Wang．How are you?

W: Fine, thank you．1 ___________ And how are you and your parents?

S: We are all fine, too．Thanks．

W: 2 _________________

S: I’m visiting my uncle with my parents．I’m going to buy three tickets to Shanghai．

  3________________．

W: I’m going to Jinan．My grandparents live there．I’m visiting them．

S: 4 _______________．

W: For two weeks

S: We’re coming back in two weeks, too．

W:5 ______________．

S: Thanks．The same to you!