When I try to find ______that prevent so many people from taking part in the program, it seems to me that there are two main causes.

I will hire the man _____ they say is a good English speaker. 

.Every year in April, the Water Festival ______ among the Dai people in Xishuangbanna.

–Bill is warm-hearted and works hard.—________ his sister Betty. 

—What does "___________" mean?—That means, the things that people do mean more than what they say.