1 задание
1) a
2) the
3) a
4) zero article
5) the
6) zero article
7) an
8) the
9) zero article
10) zero article
2 задание
1) Past Perfect
2) Past Simple
3) Present Countinuous
4) Present Simple
5) Past Countinuous
3 Задание
1) has called
2) have eaten
3) has taken
4) has been
5) have spent
6) has seen