He can't help us do it ,I think(改为含宾语从句的复合句)I don't think he can heip us do it为什么don't think 能用而think that不能用?除了think这样的单词以外还有那些单词在复合句中有否定意思的要提前?

li ming can't come to help us this afternoon .he has_____A,something important to doB,important something to doC,to do important somethingD to do something important lucy can do her homework a＿,she doesn't want any help.tom told us he didn't know the o＿question He is busy preparing for the speech,so he can't help _____the experiment whih us. He can do the work.He ________.A.needn't help B.doesn't need to help C.needn't to help D.doesn't need any help Ask him to do what he can _____ us,will you.(help)填什么 Ask him to do what he can ___________( help) us,will you? He can do the work himself.He___.A.needn't help B.doesn't need to help C.needn't to help D.doesn't need any help 改错robots can help us do many workRobots can help us do many work He doesn’t need help b() he can do it himself. Edison i＿ many things in his life,he is a great i＿lucy can do her homework a＿，she doesn't want any help。tom told us he didn't know the o＿question you can't do the work if he doesn't help you 改为同义句 He can't help us do it ,I think(改为含宾语从句的复合句)I don't think he can heip us do it为什么don't think 能用而think that不能用?除了think这样的单词以外还有那些单词在复合句中有否定意思的要提前? can`t help but do ,can`t help doing,can`t choose but do,can`t but do都对吗? can't help but doing,can't help but do ,can'help doing的区别 He didn't help us.I _____,he asked us for help can't help do 还是doing can't help but do求例句 He can't _(help ) you