помогитеееееееее плиз

1. не очень уверена, но все же. 
1) after
2) ater
3) before
4) after
5) before - не уверена
6) before

2.
1) had eaten 
2) had already started
3) had went
4) had stydied
5) had eaten

3.
1) was
2) got
3) phoned
4) invited
5) made