IV. Mistake recognition: 1. For years, elephants (A) were hunted for food and ivory, and as a result (B) their (C) numbers have been (D) greatly reduced. 2. Different (A) species of octopuses may measure (B) anywhere from two inches (C) to over thirty feet (D) in long. 3. George Washington Carver found (A) hundred of uses for the peanut, the sweet potato, and the soybean and thus (B) stimulated the (C) cultivation of these (D) crops. 4. Conservative philosophers (A) argue that the very structure of society (B) is threatening by civil disobedience, (C) while humanists (D) stress the primacy of the individual conscience. 5. (A) Since 1971 the (B) regional corporations set up in Alaska by congress (C) managing everything from fishing to (D) banking. 6. Average family size has increased from the Victorian era. 7. They prefer to stay in their home country because family ties. 8. Most children nowadays are too busy for spending time with their parents. 9. Although my parents are very busy at work, but they try to spend as much time with their children as possible. 10. After breakfast on the second day there was a (A) notice pinned up on a board near (B) reception that indicated the new (C) position where the afternoon's activities (D) should be held. 11. One of the speakers (A) scheduled for the day before the final meeting was known to be very boring and so (B) few delegates (C) waited his (D) presentation. 12. For (A) the most popular speakers the committee (B) had decided to use the (C) main hall that is capable of (D) supporting at least 200 people. 13. They (A) are such (B) a nice people (C) that everybody (D) loves them