1. if it rainS, we'll take an umbrella (1st conditional - первый кондишнл, описание реальных условий. Здесь главное запомнить, что английский - не русский и говорить так, как в предложении номер 1 не надо. Present simple + future simple - если дождь идет, я возьму зонт (это очень грубый перевод, но понять).
2. I think my dad will BE here next Monday (просто пропущен глагол to be, НЕ говорим is потому что у нас уже есть will)
3. Perhaps Sam comeS with Alice. (Present Simple, у he/she/it (Сэм в нашем случае это он - he) ставится S на конце глагола) Или Perhaps Sam WILL come with Alice (Future simple)
4. I think Mike WILL go to the cinema tomorrow (Future simple, тк стоит tomorrow)
5. Will the trip from Tomsk to Moscow take a long time? (тут не уверена, видимо, неправильный порядок слов. Если этот вариант не подошел, то скажите How long does it take to get from Tomsk to Moscow?)
6. I'm home, when my parents come (0 conditional если это факт). I will be at home, when my parents come (Я буду дома, когда мои родители придут, 1 conditional).
Boris woke up when it was already quite light. He looked at his watch. It was a quarter to seven. Quick! Boris jumped out of bed and ran to the bathroom. He had just time to take a cold shower and drank a glass of tea with bread and butter. He was in a hurry to catch the eight o'clock train. At the railway station he met three other boys from his group. They all had small backpacks and fishing rods. In less than an hour they got off the train at a small station near a wood. They walked very quickly and soon found themselves on the shore of a large lake. The boys spent the whole day there fishing, boating and swimming. They returned home late at night, tired but happy.
2. Paula (dropped) the cup she was holding and (burst) into tears.
3. Were you ( working) in Spain this time last year? - Yes, I (went) out there in '93.
4. She (was writing) to her brother when he ( walked) through the front door.
5. Why didn't you ( speak) to Jim at the meeting yesterday? - Because he (had left) by the time I got there.
6. The poor woman complained she (had been having) trouble with her eldest son for a long time.
7. The waiter assured me that he (had looked) for the watch everywhere.
8. He (had written) the whole composition during the lunch hour.