The frown on the man face showed that he was displeased. Here, '$frown^{\prime} can be replaced by$ –––.

1.Mary didn't do well in the class because –––.

2.The antonym of '$sluggish^{\prime} is$ –––.

3.Climatologists ––– that midway through the next century, temperatures may have risen by as much as 4°.

4.Reading books ––– an impressive habit.

5.The meaning of 'turn $down^{\prime} is$ ¾.

6.The correct question is ¾.

7.The antonym of '$opaque^{\prime} is$ ¾.

8.She often visits her home town, ¾?

9.The master dispensed ¾ the services of his servant.

10.¾ the danger that he might be injured, Jamal bravely entered the burning house in order to save the youngster.

11.Each of the students in the class has to type ¾ own research paper this semester.

12.He heard the girl ¾ in a melodious voice.