(2010·北京高考)—Good morning. I've got an appointment with Miss Smith in the Personnel Department.—Ah, good morning. You ________ be Mrs. Peters.

Some aspects of a pilot’s job__________ be boring, and pilots often ________ work at inconvenient hours．

–Mr. Wang, can I finish my homework tomorrow?   --Sorry, you ________. 

— May I take the magazine out of the reading room?— No, you can’t. You ______ read it here. It’s the rule.

---Look at that girl! Is that Susan?---No , it _______ be her. She has gone back to her hometown.