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The class had begunA forB five minutes whenC I got toD the school.

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Do you knowA whatB are youC studying forD?

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InA the afternoon of May 4B, an old friend of my father'sC came toD see him.

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Yesterday he toldA usB that his father wasC much wellD than before.

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The old man wasA such movedB that he thankedC the policenan again and againD.

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When I got toA the classroomB, Mr. Li wentC to his office alreadyD.

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—How longA will you return toB your hometown andC work there?

—InD two years.

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The boy remembered that the missingA sheep was lastB seen eatC grass atD the foot of the hill.

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When she was givenA an expensiveB birthday gift by him, she wondered whether to receiveC it or notD.

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After yearsA of investigation, the government found that itB quite necessaryC toD revise the presentlaw.

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