—Tom，where is your father?
—I’m not sure．He________in his office．
| A．must be |
| B．may be |
| C．maybe |
| D．need be |
— “Frog”, Mo Yan's latest novel（小说）, please!
— Sorry, it ________ just now. But it will come out again soon.
| A．sold out | B．is sold out | C．has sold out | D．was sold out |
—Is that boy Alan?
—No, it ______ be him. He left for Beijing yesterday.
| A．can’t | B．shouldn’t | C．needn’t | D．mustn’t |
—Have you heard about the airplane accident?
—Yes, all of the passengers on the plane lost their___________.
| A．money | B．time | C．interest | D．lives |
—_______ do you go to see your grandparents?
—Once a week.
| A．How far | B．How long | C．How often | D．How soon |
—When did you finish your homework last night?
—A bit late, ________ my father came back home from work.
| A．though | B．unless | C．if | D．until |