Four parts have been underlined and lettered A, B, C, and D. One contains an error. 

1. According to (A) a recent survey, (B) all knows the value of English, (C) especially in commerce and industry, but not all are doing their best (D) to study English.

2. David, (A) the hero in the novel, (B) he grew into a brave man and (C) won the friendship of all the people (D) in the neighbourhood.

3. Some people know (A) how to save money, but (B) others don’t. (C) As for me, I have saved a little. I spend most of my savings (D) for books.

4. (A) While they are watching TV, the thief came quietly in. He (B) held up everybody, (C) ransacked the house, and (D) left with valuables.

5. Fillip, (A) an experienced hunter, and (B) his companions killed a tiger (C) in the jungle. (D) However, they were rewarded.

6. X: What do you know about the quarrel (A) between your father and mother?
Y: (B) At that time, (C) all I knew (D) was my mother was wrong.

7. X: Like Tom, (A) Mary eats a lot, but she is (B) not so strong like he.
Y: (C) Perhaps there is a reason.
X: But who knows (D) what the reason is.

8. X: (A) Look! I’ve just (B) got through my examination.
Y: (C) What did you say? Did you say that (D) you just passed your examination?