(2013·高考天津卷)It was not until near the end of the letter ________ she mentioned her own plan.

Many families have their own cars. __________， it causes the terrible air problem.

What are you doing–I am ________ my wallet. But I can’t _______ it.

You are asked to attend the meeting ______ in the hall this weekend.

I didn’t hear your call because I to music at that time.