单项选择题

We ______ swim in the little lake when we were children.

A． were used to
B． used to
C． are used to
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单项选择题
--How long may I ______ this dictionary-- For two months.
A． borrow
B． keep
C． lend
单项选择题
-- It's 10 o'clock now. I must go.-- It's raining outside. Don't leave______ it stops.
A． when
B． while
C． until
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