How long is it since you used the car?

1 .How long is it since you used the car?
-.when did............
-.how long have ............
2.we started living here in 1995.
-.we have.............
3.I have started learning english in 2000
-I ............
4.my sister began to teach english 20 years ago
-.My....................
5.it began raining half an hour ago
-It..........
6.they have built this hotel for a year
-They..........
7.he has had his breakfast since 7 o'clock
-he.................
8.mr.ba has talked to our teacher for an hour
-mr.ba...............
9 we started working here 2 years ago
-we have.......
10.it's un nesscessary for them to drive so fast.
-we don't.......
11.the coffeewas too weak to keep us awake
-the coffee wasn't................
help vs mn