1. The twins are so much alike. It’s difficult to tell one from the other.
2. Mr. Bates, Mr. Harris and three other teachers were there.
3. I know that there are other points of view.
4. Some members of the team are English, the others are Welsh.
5. Rob raised one arm and then the other.
6. My other sister is a teacher.
8. Some people drink coffee for breakfast, others prefer milk or tea.
9. I can’t do answers four and five but I have done the others.
10. Harold went swimming while others were playing tennis.
11. These shoes are dirty. I’ll have to wear my other pair of shoes.
12. We must help others who are less successful.
Объяснение:
1. By the time all the papers are ready, the deadline will have passed. - слово-подсказка By the time, т.е. действие завершится до какого-то момента в будущем - используем Future Perfect
2. The flight leaves at 1 pm and arrives at 3.45. - по расписанию - используем Present Simple
3. I will be seeing Nick tomorrow, so I can give him a message.
4. This taxi is so slow. By the time we get there the meeting will have finished. - см. №1
5. Sorry, I can't see you on the 15th-I will be playing golf with a client. - Future Continuous, т.к. действие будет происходить в определенный момент в будущем
6. I won't do anything until I hearfrom you. - придаточное времени (на это указывает союз untill) - используем Present Simple
7. Hurry up! By the time we arrive, the play will have started. - см. №1
8. What will you have learned by the end of your course? - см. №1
9. Will you be using the conference room next Tuesday? - см №5
10. When I see him, I'll ask him. - придаточное времени (на это указывает when) - используем Present Simple