从下列方框中选出相对应的答语。
A. On foot.
B. What’s the matter?
C. We should care for our earth.
D. Good idea!
E. Twice a month.
1．Why not go swimming? （_____）
2．What should we do? （_____）
3．Help! Help! （_____）
4．How often do you play computer games? （_____）
5．How do you go to school every day? （_____）
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