Human facial expressions differ from those of animals in the degree ___ ___ they can be controlled on purpose.
The young doctor is determined to devote all his life to ________ the cause of cancer.
This dictionary ________ me. It cost me twenty dollars.
I don’t like ________ you speak to her.
Hefailedintheexamination,________madehisfatherveryangry.
There is no doubt ________ he will succeed.