Every possible means ________ to prevent the air pollution，but the sky is still not very clear.

According to the school rule, no student ________ go out during the class without the teacher’s permission.

Traditionally, college students hold a graduation ceremony to encourage themselves before they _____ on their life journey.

When ________ for his views about histeaching job, Philip said he found it very interesting and rewarding.

How far is it from the supermarket to yourhome?—It’sabout .