单项选择题

At 13 he was sent to a shop, () he learned the business.

A．where
B．which
C．when
D．that

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单项选择题

Susan got sunburned because she () on the beach all afternoon.

A．lay
B．is lying
C．has lain
D．had been lying

单项选择题

I checked all my answers (). my teacher had suggested.

A．as to
B．such
C．that
D．as

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