-______ that company to see how they think of our product yesterday?
-Yes. They are happy with it.
Did you call
Have you called
Will you call
Were you calling
If he had spent more time practicing speaking English before, he _____ able to speak it much better now.
They must have been enjoying themselves there,or they __________ so long.
Eye doctors recommend that a child's first eye exam ________ at the age of six months old.
—Where are the children? The dinner's going to be completely ruined. —I wish they______always late.
George is going to talk about the geography of his country, but I'd rather he ________ more on its culture.