—May I watch TV for another 15 minutes, Mum?—Oh, dear, if you _____.
“When _____ he come?” “I don’t know, but when he _____, I’ll tell you.”
I don’t know if she _____, but if she ____ I will let you know.
He is very busy. I don’t know if he _____ or not tomorrow.
“What place is it?” “Haven’t you found out we _____ back where we ______?”
He has changed a lot. He _______ not what he _______.