Human facial expressions differ from those of animals in the degree ___ ___ they can be controlled on purpose.
Can you think of a situation in which the two ______ from each other.
_____his timely help ,Kate overcame the hardship at last.
I will tell you what trouble I had ______ your house on the way I came here.
—Oh, my God. I forgot my purse in the shop.—Oh, not again. Why ____ you always ______ something?
It is required in our school that lights in students’ rooms ______ off by 11o’clock.