Don’t waste your words any more; she is as ______ as a mule (骡子) and no one can persuade her.
. ____ by the thought that she was suffering a heart attack, she screamed for help.
. — Thank you for picking me up in this remote area! — _____. I’m just going in the same direction.
. It wasn’t such a good dinner ____ she had promised us.
. At the meeting they discussed three different ____to the study of mathematics
. _____worried me the way he keeps changing his mind. A. this B. that C. it D what