I’m sorry you’ve been waiting so long, but it’ll still be some time _________ Brian gets.back.

He is in his late 40s now and still single.—It is high time he _____ himself a wife and settled down.[ ]

Exploring the polar regions is a _______ issue because it may destroy the ecological environment there.[ ]

Roman Holiday is a classic love movie. Let’s go to the cinema tonight.—Sorry, I _________ it with my friend twice.

If shethat Mary would come to see her, she would never have gone to the party.