You'd better not ring me up between 9:00 and 10:00 tomorrow. I __________ an important meeting then.
35.They asked the government to make ______clear to the public ______ they did was right.
34.The reason why he failed is ______ he was too careless.
33. We were about to climb up to the top of the mountain ________ it began to rain heavily.
32. —How do you find my idea? —_______.
31. Don’t you think that______________ is no use promising without doing?