1.When i came back my car was gone (seen)

→When my car was gone, i haven't came back.

2.Did you see Alice at the party last night (catch)

→Did you catch Alice at the party last night?

3.It seems to me that her playing has developed amazingly in the past year (seems)

→Her playing seems to have developed amazingly in the past year to me.

1.B.Of

3.B.point

4.B.weren't they

5.C.solved