PASSIVE

1 They'll have completed the new Metro lines by the time they hold the Olympics.
The new Metro will have been copleted by the time they was hold the Olympics.

2 If they'd received your complaint, they would have notified you.
If they'd was received your coplaint, they would have been notifed you.

proszę o sprawdzenie

coś jest źle z drugą częścia pierwszego zdania
2 jest kompletnie źle
zacznij:
if your complaint ... you ...

w 1 - dales dobry podmiot (Metro) w pierwszej czesci zdania, podobnie musisz zmienic podmiot w drugiej czesci

The new Metro will have beend completed by the time the Olympics was hold.

końcówka znaczy u Ciebie: do czasu aż Olimpiada była urządzić

Więcej ćwiczeń ze strony biernej na :http://www.gettinenglish.com/gramatyka-angielska-2/passive-voice-strona-bierna/ do tego testy online za darmo:
http://www.gettinenglish.com/testy-online/testy-gramatyczne-angielski/strona-bierna-cwiczenia/

Zapraszamy na Nasz fanpage. Z nami angielski do przodu :)

1. held ;)

czy drugie zdanie jest ok?

1. ale jaki czas
2 jest zle, przeciez juz zielonosiwy to napisal

Co do drugiego zdania to zobacz analogię z pierwszym:
1 They'll have completed the new Metro lines by the time they hold the Olympics.
The new Metro lines will have been completed by the time they was hold the Olympics.

2 If they'd received your complaint, they would have notified you.
If they'd was received your coplaint, they would have been notifed you.

Poza tym niektóre formy czasownikowe są nie takie jak trzeba (w pierwszym i w drugim zdaniu)