I think it is sure可以这么用么?

I think it is sure可以这么用么? I think the door is locked,but I would better go and____A.make sure to it B.be sure about C.for sure D.make sure I think he is sure to___(succeed). I it think is right it is not what i think you think but what you think i think you think. 英语翻译具体语境：This is really a good photo of youI think so,too.Who took it?I am not sure.I think it was taken by my Uncle George.He is a photographer. Do you think the rain will stop tomorrow?____.It has rained for ten days.It's too wet everywhere.A.I hope not.B.I'm sure it is.C.I'm afraid it will.D.I hope so. I think it interesting to study English,it后面可以不用is吗? 保持原句意思I am sure this is Alice's mobile phone.I think it _____ ______Alice's mobile phone. 关于think is,英语语法例句：I think it is hard to say.这是什么结构?为什么两个动词可以连用? 2.Do you think the rain will stop tomorrow?______,it has rained for half a month.It is too wet.A..I hope that BI’m sure it will C.I’m afraid it will D.I hope so it sure is I think it is very interesting 是什么意思 i think it is about dreams. I don’t think it is { } coat I think it is my worry too I think it is __________ interesting movie i think it is improssble是什么意思