单项选择题

Not until I wrote to him _________ that I was also in Americ

A． had he knownB. he knewC. he didn't knowD. did he know
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单项选择题
She drew the small bridge on the painting with only a few_________
A．lines
B．movements
C．strokes
D．brushes
单项选择题
I'm not interested in __________ you go or not.
A．whether
B．if
C．how
D．where
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