Mr.Smith didn't know whether to leave or stay there.

whether既然连接句子,为什么Mr.Smith didn't know whether to leave or stay there. Mr.Smith didn't know whether to leave or stay there. Not until Mr.Smith came to China_what kind of country she is.he knewhe didn't knowdid he knowhe couldn't know选出正确答案并给出理由 Mr. Smith didn’t know whether to leave or stay there. 这句话中的stay前面是不是应该加一个to啊? They didn't cry any more when they saw Mr Smith 同义句They____more____when they saw Mr Smith . Mr.Smith was walking on the street last Sunday evening.A good-looking young woman met him and said,Good evening.But Mr.Smith couldn't r__1__ who she was.He didn't know her.He was much surprised and didn't know w__2__ to say.Then the woman knew that -do you know mr.smith? 改为同义句：mr smith didn‘t go to shanghai.he went to nangjing. mr smith didn't go to shanghai _to najing 语法：Not until Mr Smith came to China ___ what kind of a country she is.A.he didn't know B.he knew C.did he know D.he could know Mr Smith didn't have __ money (much还是many） Mr Smith must have been to your home this morning.——Mr Smith must have been to your home this morning.——No,he________ ,because he didn't know my address.A.couldn't.B.can't.c.mustn't.D.may not I don't know where does Mr.Smith live .为什么错了 We don't know where to go on vacation.Mr.Smith _____ going skiing in Europe. I didn’t know Will Mr Green buy a new car? I didn't know.合并为复合句 Mr.Smith's plane___.Let's wait for him here.A.hasn't arrived B.didn't arrive C.doesn't arriveD.couldn't arrive mr smith went to work .he didn't have breakfast怎么改同义句mr smint went to work＿＿＿ ＿＿＿ where does Mr Green live?I didin't know.(改为宾语从句的复合句）I didn't know __ Mr Green__.这个改为宾语的复合句不会 前面打错了 应该是 I didn't know.