Укажите правила, которые понадобятся для ответа на эти вопросы.
1) He (read) the essay when the telephone rang.
2) How long (you/learn) English?
3) We are good friends. I (know) him for more than 10 years.
4) Liz informed us that she (already / buy) the tickets.
5) Dogs must (keep) on a lead.
6) The birthday present (send) tomorrow.
7) If you (go) to the supermarket, will you buy some milk?
8) What would you do if you (meet) someone famous?
9) James spends a lot of time on his computer (chat) with his online friends
10) It was late and we (have) to finish our work.
11) They entertained (they) by playing a game
12) Be (CARE)! There is a banana skin on the road.
13) (SCIENCE) say that robots with human intelligence will become a reality soon.
14) Have you read this (INFORM) leaflet?