________ seems to be a strong competition in China for senior high students to enter college or university.
As _____rule, apples are sold by_______weight and eggs by _______dozen.
—No wonder you caught a cold. You _______out last night without a coat. —I know how silly I was.
Smallpox, a kind of disease, has now died ________.
The discovery of new evidence led to ________.
—How much farther shall we have to go? —Another five miles until we reach the mountain _______.