Ответ:

B) I will be back at two o'clock

c) This is not going to work

d) Shall I turn the lights on?

e) I will sit with Helen

f) I am going to study engineering

Объяснение:

1)I will be back at two o'clock

2)This isn't going to work

3)Shall I turn the lights on?

4)I will sit with Helen

5)I am going to study engineering