读短文，用所给动词的适当形式填空。

     James wrote a play for television about a family who came to England from India, and the play was very

interesting. It 1_____ (buy) by an American TV company. James 2_____ (invite) to go to New York to help

them. He lived in Washington, which is an hour away from New York by air. The plane 3_____ (take) off at

8:30 in the morning. So he had to be at the airport at about 7:30. He ordered a taxi for 6:30 and went to sleep.

He forgot to wind the clock, so he was late for the plane. He was just 4_____ (prepare) his coffee when the

radio sent out another news, "Reports are coming in of a plane crash (飞机坠落) near Washington airport.

A Boeing 707 fly to New York crashed shortly after taking off this morning. Plane number 2234..." James

suddenly turned pale (苍白). "My plane," he said aloud. "If I haven't 5_____ (be) late, I'd have been on the

plane!"

20世纪20年代影响大众传播效果研究的因素有（）

A.大众传播媒介的发展

B.社会环境的变化

C.军事的需要

D.人们探求知识的欲望

E.社会科学研究工具的进步