Out of the crowded bus______, who was dressed in a black suit and waved to a woman..
The telephone system has ______. How can I contact him?
The wheat fields are irrigated by water _____ from a pond through bamboo pipes.
I can’t see my old grandmother ____ alone in the country, so I’ll have her ____ with me in the city.
________ by the problem that was put forward at the meeting, the people in the audience had ________ looks on their faces.
I ______ asleep because it took me a long time to realize that the telephone was ringing.