Question

请各位高手帮忙解答几道初中英语题！！！！！！！

1.Be careful,children! You______step on the grass.
Sorry,we____do that again.
A.needn't won't B.mustn't won't （顺便告诉我选择的原因和知识点）
2.They spent as many hours as they could____waste paper to keep their classsroom clean.
A.to take up B.put up C.picking up D.sent up （顺便告诉我每个词的用法和意思）
3.Remember to e-mail me.All of us hope you_____.
A.quickly B.soon C.fast D.quick （顺便告诉我每个词的用法） 谢谢啦！！！！

Answer 1

1 选B
NEEDNOT 是不必的意思，而MUSTNOT是禁止，不能够的意思

2 选C 句型是spend sometime doing something ，pick up 捡起
take up 占据 占用
put up 举起
send up 提出

3 选B 表示将来比较快~！
A C D 都是快的意思，A 用来形容动作很快 ，副词
C用来形容快，既可以当副词，也可以当形容词