ПОМОГИТЕ!!!!!!!ДАЮ 40 БАЛЛОВ

Примерами богатых видами биоценозов могут служить:
а) долины рек в засушливых районах
б) биоценозы, подверженные затоплению при разливах рек
в) арктические пустыни
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Поставьте глаголы, стоящие в скобках, в зависимости от смысла, в Past Indefinite, Past Continuous, Past Perfect или Past Perfect Continuous:

1. He not (to see) me as he (to read) when I (to come) into the room. 2. When he was in Gorki he (to visit) the places where he (to play) as a boy. 3. The telegram (to arrive) five minutes after you (to leave) the house. 4. It (to rain) hard last night when 1 (to leave) the office. 5. The train could not stop because it (to travel) too fast at the time. 6. When I (to call) for my friend, his sister (to tell) me that he (to leave) half an hour before. 7. I (to shout) to him to stop, but he (to run) too fast and not (to hear). 8. Large crowds (to wait) at the station when the Soviet delegation (to arrive). 9. When I (to hear) the news, I (to hurry) to see him. 10 We (to walk) to the station when it (to begin) to rain. 11. He (to sit) in the garden when the storm (to break) out. 12. He (to thank) me for what I (to do) for him. 13. When I (to wake up) this morning, the sun (to shine) high in the sky. 14. Before he (to enter) the Institute, he (to work) at a plant. 15. The manager (to leave) the office before I (to arrive). 16. When 1 (to go) to the room the next day, I (to find) the books exactly where I (to leave) them. 17. We (to walk) for about two hours when at last we (to see) the lake.

Поставить глагол в нужную форму....... ПОМОГИТЕ

1) If  he were rich, he (buy) a car.

2) If i (know)  her better, i should ask for help.

3) If I (have) money, I shall give you some.

4) If I had had time, I (finish) the translation.

Надо всю жизнь учиться, учиться и учиться у жизни у науки думать и аналлизировать. Где можно найти продолжение??