You’ll have to be patient ______ my mother —-she’s going rather deaf, which ,after all，also makes her badly cut ______.

She was so ________ in her job that she didn’t hear anybody knocking at the door.

The traffic is heavy these days.I ________ arrive a bit late，so could you save me a place?

27．—I can’t find Fred．He is not at home．—Why don’t try______him

he popularity of ______ cell phone, more andmore people are addicted to it and do less and less face-to-face communication,which has become _______ widespread concern.