按括号中的要求完成改写后的句子，每个空格填一个单词。
小题1:Mr. Smith is doing morning exercises now. (改为否定句)
Mr. Smith _________ ___________ morning exercises now.
小题2:The old man has been in Jinan for about 50 years.（对划线部分提问）
___________ ____________ has the old man been in Jinan?
小题3:My friend asked me:“Do you want to go there?”(改写句子，句意不变)
My friend asked me ___________I ____________ to go there.
小题4:Because of your help, we could finish the work easily. (改写句子,句意不变)
___________ ___________ your help, we could finish the work easily.
小题5:Parents will allow teenagers to relax themselves if they finish their homework. (改写句子,句意不变.)
Teenagers will be ___________ to relax themselves if their homework___________
finished.
小题1:isn’t doing
小题2:How long
小题3:if wanted
小题4:Thanks to
小题5:allowed is
小题1:含有be动词改为否定句在其后加not，故本题空格处填isn’t doing。
小题2:对时间长度提问的用疑问短语多长How long。
小题3:一般疑问句改为间接引语需用if来连接，主句为过去时，从句要用过去时，故用want的过去式wanted，故本题空格处填if wanted。
小题4:本题的含义也可以为多亏你的帮助，我们很轻松地完成了工作，thanks to可以表示多亏的含义，故本题空格处填Thanks to。
小题5:本题改写的句子都为被动的意思，用被动结构be+动词过去分词，故本题空格处填allowed is。