1. Dams are used to control flooding (A), provide water for irrigation (B) and generating (C) electricity for the surrounding area (D).
2. The closer it gets to (A) December 21, the first day (B) of winter, the short (C) the days become (D).
3. Either (A) Mr Anderson or (B) Ms Wiggins are (C) going to teach our class today (D).
4. My parents (A) often take careful (B) of me when (C) I am ill (D).
5. Have you (A) ever read (B) any (C) novels writing (D) by Jack London?
6. Publishing in the UK (A), the book has won (B) a number of awards in (C) recent regional book fairs (D).
7. Perhaps the most (A) unique thing about (B) carbon atoms are (C) their ability to combine (D) with themselves.
8. Her family had great difficulty (A) to get (B) her transferred (C) to another (D) hospital.
9. Hardly he had (A) entered the office (B) when he realized (C) that he had forgotten (D) his wallet.
10. The economy is heavy (A) dependent on industry (B), and economic growth has always been (C) of greater concern than (D) environmental preservation.