I often reply to his blog only to show my        of his thoughtfulness .

____ speaking, a person must care much about his ____, because it is not only a personal thing, but also a social one.

 If what you are teaching doesn’t _____ to your students, your students will gradually lose interest in it.

 The American girl has a good          of Chinese and can express herself freely in the language.

I’m sorry to tell you that we will not tell you the results of the survey until we have looked through all the _______.