单项选择题

It is hot and dry; the flowers need ______.

A．being watered
B．be watered
C．to water
D．to be watered
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______ you feel too ill to go out, I would rather not stay at home tonight.
A．Because
B．Although
C．Unless
D．If
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We live in a time ______, more than ever before in history, people are moving.
A．what
B．when
C．which
D．where
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