The water in this river is harmful becauseIt’s a ______ river.

Jimmy is _________one-year-old boy and hehas_________8-year-old sister.

Excuse me, madam. Could you please tell me _________ the bus arrives—Sure. At 9:00.

下列各句中，交际用语使用不得体的一项是（ ）

The mother used to ________her son’s pockets while he was asleep, looking for letters from his girlfriend.