(2010·四川高考)—________ I take the book out?—I'm afraid not.

  —The winner is a tall and thin boy with glasses!—Well，it________ be Mike.  He doesn’t wear any glasses.

-----Do you know where David is ?  I couldn’t find him anywhere.-----Well. He _______have gone far-----his coat’s still here.

 -- I can’t believe that Jeff _______ have quarreled and fought with his boss.-- Well, if one _______ ask for trouble, it just can’t be helped.

 -Must I send my uncle an e-mail now, Dad? -No, you ____.You____ do that after you finish your homework.