单项选择题

The boy looked at the stranger carefully, _________ who he could be.

A．wondering
B．having wondered
C．to wonder
D．wondered
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单项选择题
“Why didn't you use that printer” “Because it wasn't ________ to fit it.”
A．enough good
B．good as enough
C．as enough good
D．good enough
单项选择题
______ the terrible flood of bad novels and poor works, there are good novelists.
A．Though
B．Despite
C．For
D．Since
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