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.

   5. What you did is not right, so you should make an a______ to your teacher.

   6. When you are waiting for a bus, you should wait in l__________.