—Could I borrow your dictionary?—Yes，of course you ________.

The police still haven’t found her, but they’re doing all they      .

–Do we have to talk with Jack about that matter?–Yes, I think we __________.

— Listen! Jane is singing in the next room.— It             be her. She has gone to New York.

(2013·北京东城二次联考)—________ you interrupt now？Can't you see I'm on the phone?—Sorry，sir，but it's urgent.