[ Adverb Clauses ]
By the time Alfonso finally graduated from high school, he_____ seven different schools because his parents moved frequently.
A. attended
B. was attending
C. had attended
D. had been attending
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Comparison › ViewEnglish is ________ than Chinese. (easy)
A. easier
B. more easier
C. the easy
D. the easiest
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We should __________ more fruits and vegetables.
A. has
B. had
C. have
D. having