—How about going out for a break?— . We've been working for three hours.
It looks like __________ weather is changing for __________ worse. We had better cancel the trip to the mountains.
We can see monuments here and there. Those who have made great ________to human beings and society will never be forgotten.
Cleverness is not always a ________ of high grades in exams. You’d better learn knowledge carefully and practice more.
It is known that the weight of an object ________ from place to place on the earth.
Hibernating animals have stored ________ fat in their bodies during the summer and autumn.