33Only after he had spent several nights working on the math problem_______to wonder whether the problem was wrongly set　　　　

One minute she burst into _____ catch her mood at any moment.

If it ________tomorrow, we __________go to the park.

I hear Huang Gang made an English speech at thegraduation ceremony yesterday. -______ , and ______.

Some special projects are ________ to protect our environment, so we may be _____ to having a clean and beautiful home in the near future