There are many students ______ in the apartment.
________ Joe ________ Steve may go camping with you on Tuesday, because they are not allowed to go out on school days.
I bought a smartphone(智能手机) yesterday, and it works well, would you like to buy ________ like this?
—The song “Where did the time go?” ________ the old days and the love of my family.—Sure. It’s my favorite song.
—Who’s singing in the garden?—It ________ be Tom. He always practices singing at this time.
—I called you at 8:00 last night, but you didn’t answer.—Oh, I ________.