As it is known to all,________ attention you pay to your spelling,________ mistakes you might make.

 He began to take political science __________ only when he left school. 

The local villager gave such a(n)______description that all the tourists felt as if they were right on the scene.

Finding the ______look on the student’ s face, the professor felt _____about his explanation. 

This construction firm has a long history, complete facilities, fine technique and     service.