Put the verbs in the bracket in the correct tense or form

I. Put the verbs in the brecket in the correct tense or form:
1. when he was young , he ( speak ) ......... english well.
2. she asks me ( take )............ her to the zoo.
3.Nam...........just ( finish )...............his homework.
4.if we plant more trees , the air ( not be )............... so polluted.
5. mrs hoa ( watch ).............. television three times a day.