1.I have _____the speech contest this Saturday.

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1.I have _____the speech contest this Saturday.
A.signed for B.signed up for C.signed up
答案给的是b 为什么不能选c
2.Think of all the things you can do _____(helpful) the poor.
fall into、fall behind、 fall down、 fall off 之间有何区别?

1、sign up 签约雇用,签约参加
2、to helpful
3、fall into落入；分成
fall behind拖欠；落在后面
fall down跌倒；失败；倒塌
fall off n.下降,减少；分开；减退

have they Speech English Contest an this afternoon We have a speech contest this afternoon怎样改成一般疑问句 Let’s （have） a speech contest I don't have white shoes for tomorrow's speech contest. I'm very ( ) before the speech contest. 帮忙改英语病句 1.I’m glad to have a speech here.This is my speech.2 1.They have an English speech contest (on October 30）（对划线部分提 The English speech contest this year is a _____ comprtitive We have an English speech contest in January.(对划线部分提问）划线部分是i 英语 They have an English speech contest on October 30 ------- We have an English speech contest on September 9th 该怎么回答Do you have an English speech contest?