--How long have you the motorbike? --For about two weeks.
—Miss Li, are we going to have a picnic tomorrow?—Yes. But if it ______, we’ll do some reading instead.
— “Frog”, Mo Yan's latest novel(小说), please! — Sorry, it ________ just now. But it will come out again soon.
—Is that boy Alan?—No, it ______ be him. He left for Beijing yesterday.
—Have you heard about the airplane accident?—Yes, all of the passengers on the plane lost their___________.
—_______ do you go to see your grandparents?—Once a week.