The _______, I think, he drew from his simple experiment is not scientific.

He doesn’t work but he gets a good _______ from his investments.

I can’t put up with the _____atmosphere here.

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

—Why don’t you go to medical college and be a doctor?— Oh. It calls for a great deal of _____with long training, which I am afraid I don’t have.