The small town has ________ many changes during last 10 years.
A) undergone B) developed C) involved D) undertaken
Water is relatively purer in_____.
A. fast moving streams and rivers B. underground water supplies
C. mountainous areas D. rain and snow
In some countries, students are expected to be quiet and ________ in the classroom.
A) skeptical B) faithful C) obedient D) subsidiary
The author advises at the end of the passage that ________.
A) overtraining syndrome should be treated as a serious illness
B) overtraining syndrome should be prevented before it occurs
C) an athlete with overtraining syndrome should take a lengthy rest
D) illness causing fatigue should not be mistaken for overtraining syndrome