Laura said she had worked on the assignment since________
A. yesterday
B. two days ago
C. the day before
D. the next day

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A. to having
B. have
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D. having
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A festival day was a time for families to come together to share food and fun. Many festivals still celebrated in China today date back to ancient times. The Spring Festival, ________________, welcomed a new year in ancient China.
A. for example
B. in the first place
C. similarly
D. on the other hand
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A. simple past / simple past
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We________for three hours and we are very tired.
A. waited
B. have been waiting
C. wait
D. had waited