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

1. Although the (A) answer of this question is quite easy, (B) not many candidates can answer (C) it (D) to the satisfaction of the examiner.

2. (A) Some worked hard. (B) As a consequence, they (C) made great progresses in their studies and (D) in their work.

3. Those who work (A) without a long-term plan (B) is bound to fail. However, it does not mean that (C) all such persons are (D) doomed to failure.

4. Thank you for (A) your letter of 9 August. (B) Enclosed is our latest information (C) for your perusal. I look forward to (D) hear from you soon.

5. X: (A) Alan hurted himself when he fell down (B) from the tree.
Y: (C) Too bad! Why was he (D) so careless?

6. X: My hen (A) laid its first egg this morning.
Y: My (B) hens lay eggs every day. But they (C) do not lay (D) any this morning.

7. X: What’s (A) wrong with Mary?
Y: (B) Nothing. (C) I told her if (D) she tried harder, she would have passed.

8. X: (A) Listen! I’m going to (B) tell you a story.
Y: Can you (C) tell us the life of a hero (D) in ancient China?