Carl hopes to win the tennis game one day. That is               he has been practicing hard.

(2014·安徽马鞍山两校第二次联考)China is developing fast.That’s________I think those of my colleagues who deal with China affairs should visit China.

The reason__________ their failure you know is__________ they didn't get fully prepared for the experiment．

 —I'll ask the teacher about the attributive clause. I'm very puzzled about it.—That's just ________ most of our classmates have doubt.

You are saying that he is dishonest, and this is _____ I disagree.