№2 1 The doctor said I had to take my medicine twice a day. 2Jill suggested to take books from the central library. 3 The teacher asked what subjects I like. 4The student apologized for his coming late. 5The doctor advised me to give up fast food. №3 1 If I knew the answer,I would tell you.2 If I see Mary.I'll invite her to the cinema. №4 1were built 2 treats 3was written №51b 2b №6 1b 2a 3a 4b 5b