阅读下列短文，按要求完成各题。

    Some friends are playing hide-and-seek (捉迷藏) at Mr. Green's home. They play in Mike's room. It's time for Lily to find her friends. Lily first finds Sally. Sally is behind the door. Then, Lily sees Bob. Bob is under the table. Mike is under the table, too. Now it's time to find David and John. David's hat is on the sofa. Is David under the sofa? No, he isn't. John's schoolbag is on the chair, but he isn't there. "Where are they?" Lily thinks. Shh! Don't let her know. They are under the bed!