单项选择题

What I worried about was ______.

A．them not having studied well
B．they had not studied well
C．their not having studied well
D．their not studied well
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单项选择题
Many people emigrated to America because of being ______ for their political or religious belief.
A．prosecuted
B．persecuted
C．imprisoned
D．executed
单项选择题
Simple ______ the cartoon is, the meaning it conveys is deep and thought-provoking.
A．until
B．as
C．much
D．despite
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