He is honest and warm-hearted. __________ is why we trust him.
33. My father made a promise ______ I got a good mark he would buy me a present.
32.You are saying that everyone should be equal, and this is _______I disagree.
31. At that time I still felt ______ my feet were cold and _______ my hands ached terribly.
30.The problem lies in ______ the mist may become a thick fog , making the situation even worse.
29. Do you think ______ possible for her to work out the difficult problem all by herself?