请问I think this is Tom's book.对Tom's book画线提问 __ __ __ you think this is.前面三个空怎么填

This is what I think. I think this question is easy to answer.和I think this question easy to answer.哪个正确? I think this talk is worth listening to.句中为什么要加to? I think to be or not to be ,this is a qusetion是什么意思? Is it ________for the little boy to answer this different question?I think so .He's clever!请问是填project好,还是perfect好呢? I think this TV s____ is boring I think this skirt is too (e ). I think this is against the____(法律). I think this box is made of( ) i think.this is what 改成复合句 This is what I think.什么句式 I think this a( ) is right. i think this life is overrated. I think this is a good way to keep healthy.(改为否定句)I __________ think this _________ a good way to keep healthy. I don't think this kind of books is suitble ___children to read.加油 I think this is the______(good)place to have a party. It is going to rain this afternoon.I think.(改为含有宾语从句的复合句) This is Mr Smith,--------I think has something interesting to tell youwhowhomthat /and why?