521. I couldn't cut the grass because the machine_______________a few days previously. A. broke down B. has been broken C. had broken down D. breaks down 522. According to this newspaper, John is said_...

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521. I couldn’t cut the grass because the machine had broken down a few days previously.

Correct answer: C. had broken down

522. According to this newspaper, John is said to have established a new record for the long jump.

Correct answer: A. to have established

523. I have never played badminton before. This is the first time I have tried to play.

Correct answer: C. have tried

524. Since he left, I have heard nothing from him.

Correct answer: B. he left

525. I like looking at these pictures, but I will have had enough by lunchtime.

Correct answer: C. will have had

526. I don’t understand this sentence. What does this word mean?

Correct answer: C. means this word

527. John usually plays tennis once or twice a week.

Correct answer: C. usually plays

528. It was noisy next door. Our neighbors were having a party.

Correct answer: B. were having

529. It is getting dark. Shall I turn on the light?

Correct answer: A. is getting

530. I am looking for Christine. Do you know where she is?

Correct answer: C. am looking