( ) 3. You finish your homework before you play computer games.
A. ought B. ought to
C. oughted to D. oughts to
3. B情態(tài)動詞ought to沒有人稱和時態(tài)的變化。 故選B。
題目來源：仁愛英語同步練習簿九年級上下冊 > Topic 3 What can we do at home to protect the environment？
鴻圖圖書寒假作業(yè)假期作業(yè)吉林大學出版社系列答案科目：初中英語 來源： 題型：
從方框中選擇適當?shù)木渥友a全對話。
A：Hi,Kangkang！Can you tell me something
about electricity? B：Yes,it is very important to us. 1
Just like fish can't live without water.
A: 2
B：Yes,you're right.
A：How can people produce electricity?
B: 3
A;It's said that coal is very limited(有限的) and nuclear power is very dangerous. 4
B：Yes，we can produce electricity from the sun，wind，water，even animal waste and so on.
A:5
B：It's a pleasure. I think we should study hard to find more new ways of producing electricity.
A. It can be produced from coal or nuclear power.
B. Oh, thank you for telling me so much.
C. Nowadays, we can't live without electricity.
D. So electricity is widely(廣泛地)used in our life，isn't it?
E. Do we have any other ways to produce electricity?
1.__________ 2._______ 3._________
4._______ 5,_________
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科目：初中英語 來源： 題型：
3. Soil pollution is such a serious problem that we should do something (reduce) it.
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科目：初中英語 來源： 題型：
1.In summer，we can always see s bees and butterflies flying around the flowers.
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