I can hear the Browns' phone bell ringing but no one is answering it; they _______ be at home.

—How was the professor's lecture?—Impressive. Thank you so much for giving me a lift during the rush hours. If not, I ________ the lecture today.

 ---Did you visit the temple? ---No. We _____it, but we spent too much time shopping.

—How I wish I had studied harder when I was in senior school! —If you had，you ________ a university student now.

Henry would rather that his girlfriend _________ in the same department as he does.