单项选择题

He wonders ______ the sound came from.

A．where
B．when
C．how
D．that
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单项选择题
Now ______ your turn to recite the text.
A．there is
B．has come
C．comes
D．will come
单项选择题
______ all over the hill and around the lake are wild flowers of different kinds.
A．To grow
B．Growing
C．Grown
D．Grow
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