A. algebra is studied in schools and colleges
B. studying algebra in schools and colleges
C. and the study of algebra in schools and colleges
D. in schools and colleges are algebra studies
10. Sociologists have long recognized that social tension ________.
A. elements from group living
B. elements of a normal group life
C. living are a group of elements
D. are normal elements of group life
KEYS
1. D 2. B 3. B 4. D 5. A
6. A 7. B 8. C 9. A 10. D
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