SELENATORnatasha 1)
2. I left school last June.
3. Why didn't you tell me yesterday?
4. I haven't still sent an email to Dave. I’ll do it now.
5. How long has she had that piercing? It looks new.
6. Did you go to the cinema last night?
2)
1.Arranged 
2.Was visiting
3.Forgot
4.Had not
5.Decided
6.Did / think
7.Began
8.Looked 
9.Saw
10.Was walking
3)
Were not / had eaten
Had gone / got
Arrived/ had not started
Took/had not finished
Had john seen / saw