单项选择题

One way to conserve water is to ______ dishes, instead of rinsing them, before loading the dishwasher.

A．polish
B．scrub
C．scrape
D．scribe
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单项选择题
A ______ of small glittering fish swam by.
A．pack
B．swarm
C．flock
D．school
单项选择题
The cottage ______ in the woods was built by George's great-grandparents.
A．to stand
B．standing
C．having stood
D．being stood
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