单项选择题

"I bought this shirt for $ 35 yesterday."
"It's on sale today for only 29. You should have waited."
"Oh really But how ______ I know"

A．would
B．can
C．did
D．do
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单项选择题
That is the robber ______ arrest a reward was offered:
A．for whom
B．for whose
C．about Whom
D．about whose
单项选择题
It was as a physician that he represented himself, and ______ he was warmly received.
A．as such
B．such as
C．as that
D．so that
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