单项选择题

______ from endless homework on weekends, the students now find their own activities, such as taking a ride together to watch the sunrise.

A. Freed
B. Freeing
C. To free
D. Having freed
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单项选择题
______ rapidly by the body, sugar provides a quick energy source.
A. Digested
B. Digesting
C. To digest
D. Having digested
单项选择题
This is an early church, ______ from the ninth century, which was rebuilt under the direction of San Carlo Borromeo.
A. dated
B. being dated
C. dating
D. dates
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