Correct the verb form in brackets. Tim (see) a serious accident while he (stand) at the bus stop. Mr Ba (teach) English in this school since he (graduate) from the university in 1986

Correct the verb form in brackets.
1. Tim (see) a serious accident while he (stand) at the bus stop.
2. Mr Ba (teach) English in this school since he (graduate) from the university in 1986.
3. I remembered (post) to you two weeks ago
4. He (not realize) that the traffic lights (be) red. He didn't stop
5. Rice plants (grow) well if there is enough rain
6. Unless Tuan (take) his library book back tomorrow, he has to pay a fine.
7. He must (do) his homework if he (want) to go out
8. I could understand the French teacher if she (speak) more slowly