He _____ when the UFO arrived.
I have no time to tell you the whole story_________. In short they got married at last.
—Excuse me, is there a post office near here? — _______ I can’t hear clearly.
—Have you ever been to Shanghai, Mary?—Yes. I ___________ there three times.
—How are you going to spend this weekend? —_________ the weather is fine, we’ll climb Mount Tai.
—I have no idea ____________ tell her the bad news. —I think tomorrow is the best time.