题目

句型转换, 根据所给句子意思，写出空缺处的正确答案。每空仅限一词。 1. What's wrong with your eye? It looks red.     What's the    with your eye? It looks red. 2. We need the money to carry on with our work.     We need the money to    our work. 3. I've bought a few key rings for my classmates.     I've bought a    of key rings for my classmates. 4. The boy cut in at the head of the queue.     The boy    in at the head of the queue. 5. Pollution is becoming more serious. so it's time for us to go green.     Pollution is becoming 一个正方形的周长是C，用含有字母的式子表示这个正方形的边长。