I、用所给单词的正确形式或根据句意和首字母提示填空。(10分)
1. The teacher is coming. would you mind ______ (clean) the blackboard?
2. The river is very dirty. It smells ________ (terrible). It is _____ (terrible) polluted.
3. last night he watched an ________ (excite) football match on TV, and he was so ________ (excite) that he couldn’t get to sleep.
4. when this h________, I will get angry.
