Because of too many differences between the two sides, a lot of questions are still left ________.A in the air B on the air C by the air D through the air
Rather than________in the city, the old man would prefer______in the count、ryside.
People in the west make_____a rule to buy Christmas presents for their relatives and friends.
A number of students ____ seen the film. That is,the number of the students who have seen the film____ large.
you understand this rule, you’ll have no further difficulty.
—My daughter has passed the exam. —Congratulations! She’s really intelligent. — .