When will he be back? (will is correct here)
12 Cross out the word which should not be in the
sentence. Some sentences may be correct.
1 After we sit our exams, we'll go on holiday.
2 I will ring you when I get to the airport.
3 By the time I will retire, I'll be very rich.
4 If your parents will come, give them this letter, please.
5 When will you know your holiday dates?
6 Turn off the lights before you will go to bed.
7 Buy me a newspaper when you will go out please
