[ Past Tenses ]
My hands were dirty because I … my bike.
A. had repaired
B. had been repairing
C. repaired
D. was repairing

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Persuasive Text › ViewA: Should I study more on English grammar?
B: No, you ______ . You know it very well already.
_
A. should
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Shanghai is …………………… city in China.
A. the most crowded
B. the crowdedest
C. more crowded
D. most crowded