Put the verbs in brackets into the correct tense

Put the verbs in brackets into the correct tense.
1,She won't let him out till he (finish) his homework.
2,Have a good time when you (go) to Paris next week.
3,We meet Joe while we (walk) down the street.
4,I haven't seen him since he (leave) this morning.
5,After I (do) my homework last night,I went to bed.
6,Jane will ring us up as soon as she (arrive) in London.
7,My sister (wear) glasses since she was three.
8,I turned off the lights before I (leave) the room.
9,They (watch) television when they heard the exposion.
10,Tomorrow you can paint the bedroom while I (mend) the roof.