In this part, there are 20 incomplete sentences.Below each sentence, there are 4 choices marked by letters A, B, C and D respectively.Choose the word which best completes each sentence.There is only ONE right answer.Blacken the corresponding letter as required on your machine-scoring ANSWER SHEET

This part consists of 20 sentences.In each of them one word is underlined，and below each sentence, there are 4 choices marked by letters A, B,C and D respectively.Choose the word that can replace the underlined part without causing any grammatical error or changing the basic meaning of the sentence.There is only ONE right answer.Blacken the corresponding letter as required on your machine-scoring ANSWER SHEET.

This part consists of 20 sentences.In each of them there is an underlined part that indicates a grammatical error，and below each，there are 4 choices marked by letters A, B，C and D respectively.Choose the word or phrase that can replace the underlined part so that the error is corrected.There is only ONE right answer.Blacken the corresponding letter as required on your machine-scoring ANSWER SHEET.

In this section you will find after each of the passages a number of questions or unfinished statements about the passage, each with 4 (A, B, C and D) choices to answer the question or complete the statement You must choose the one which you think fits best Blacken the corresponding letter as required on your machine-scoring ANSWER SHEET.

In the following passage, there are 20 blanks representing words that are missing from the context.Below the passage，each blank has 4 choices marked by letters A, B, C and D respectively.There is only ONE right answer.Blacken the corresponding letter as required on your machine-scoring ANSWER SHEET.