1.Everything must-------before the event.A.plan carefully B.be planed,carefully C.be planned carefully2.They needed to walk,------?A.needn't B.don't they C.didn't D.need they3.SO far,no one-----(send)to any place farther than the moon.4.Nothing-------(hear) about the accident ,but just like it-----(say) no news----(be) good news.Cindy----(make)---(stay)at home,as her mother----(be) terribly ill.

1.C
2.didn't they没一个答案是对的
3.has been sent现在完成时的被动态
4.has been heard, says, is
5.is made to stay, is/was made to stay, was

B，必须好好计划，仔细计划，强调计划这个动作，用被动语态。

1.选 C被动语态 be + 动词ed（过去分词） plan 的过去分词是planned2.选C didn't theyneed to do 中 的 need 是实义动词,所以用助动词 did3.has sentso far 到目前为止,用现在完成时4.is heard is said isis made to...

B.be planed,carefully
C.didn't
has been sent
has been heard says is
was made to stay was