DÀNH CHO MỌI LỚP 6 ĐẾN 12

It was not until the end of prehistoric times that the first

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Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

It was not until the end of prehistoric times that the first wheeled vehicles appearing.

not until the end

prehistoric

the frist

appearing

The workforce is generally accepted to have the best conditions in Europe.

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Biogas can be utilized for electricity production, cooking, space heating, water heating and process heating.

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Around 150 B.C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness.

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I prefer to talk to people face to face rather than to talk on the phone.

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As children we were very close, but as we grew up we just drifted apart.

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She decided to remain celibate and devote her life to helping the homeless and orphans.

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I used to meet him occasionally onFifth Avenue.

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Many scientists agree that global warming poses great threats to all species on Earth.

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During the five-decade history the Asian Games have been advancing in all aspects.

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Population growth rates vary among regions and even among countries within the same region.

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