It is hoped that a more efficient use of fuel will decrease the cost of fare.
Correct answer B. more efficient
Tip: press A, B, C or D to answer, and N for the next question.
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More Usage Topic Complementary questions
See allThe teacher was justly annoyed by him walking in late and disturbing the class.
Correct answer B. by him
The room was clean, like it had never been before.
Correct answer B. like
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If you saw his lunch, you would have understood why he is so over weight.
Correct answer A. saw
The technique may be usable in your business if you adopt it to your situation.
Correct answer C. adopt
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