--Have you decided where to go for your summer vacation? --Not yet. We_________ go to Mount Lu. It is a good place for vacation.

—Look, someone left a book.—Oh, yeah … This book ________be Kitty’s. Only she likes to read this kind of books.

Any information one wants to know about the coming National Games in Shenyang, just call 024- 62347788. It ________ be simpler. 

－I’d like to help the homeless people in the earthquake. －You ________ join a volunteer group. 

 —Did you ask Tom for help?—I ________. —I managed perfectly well on my own.