Раскройте скобки,употребляя глаголы в форме Past Simple или Past Perfect:1.It(be) my

Раскройте скобки,употребляя глаголы в форме Past Simple либо Past Perfect:
1.It(be) my first time I (fly)
2.Martin(go) to the park before you (arrive)?
3.She (have) no doubt that I (make) that mistake.
4.He(tell) me he already (pay) a fine
5.The principal (be) angry when he (see) that pupils (not/leave) the classroom yet.