This is _______ I have come to Yuanyang.
As you worked late yesterday, you __________ have come this morning.
— Must he come to sign this paper himself? — Yes, he __________.
If it were not for the fact that she __________ sing, I would invite her to the party.
— What’s the name? — Khulaifi. __________ I spell that for you?
— I think I’ll give Bob a ring. — You __________. You haven’t been in touch with him for ages.