In order to prepare a lecture, one must do a lot of research and spend plenty of time \_\_\_\__ his material so that his speech is clear and easy to follow._免费答案解析_小书虫免费题库

In order to prepare a lecture, one must do a lot of research and spend plenty of time _____ his material so that his speech is clear and easy to follow.

A. organizing
B. managing
C. operating
D. breeding
A. organizing
B. managing
C. operating
D. breeding

【答案】

QQ 微信