Hopefully in 2025 we will no longer be e﹣mailing each other, for we _______ more convenient electronic
communication tools by then.( )
have developed
had developed
will have developed
developed
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.