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

1. (A) The best thing to do is to have (B) an honest study of words (C) and memorizing those (D) given in previous examinations.

2. The educational systems of the two countries (A) is so different (B) as to provide almost (C) no basis for comparison (D) between them.

3. (A) Such juvenile delinquents are (B) too poor that they have (C) no choice but become (D) school dropouts.

4. Your method of teaching seems (A) as odd to us (B) as (C) ours (D) do to you.

5. Lennon (A) is such a helpful person (B) that (C) we are hard (D) not to respect him.

6. (A) Ways and means (B) must be found in order to prevent (C) the number of juvenile delinquents (D) to increase every year.

7. (A) The Wang’s way of (B) child rearing is too lenient, (C) while the Chens and Yangs (D) tend to be too strict.

8. (A) So far in our (B) teaching of languages, we (C) have given enough emphasis to some common errors, but we have not (D) stressed on complicated problems.