单项选择题

All the people present at the conference are （） and they will discuss some teaching problems.

A、mathematics teachers
C、mathematic teachers
B、mathematics teacher
D、mathematic's teachers

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单项选择题
（） she's lawfully old enough to get married, I don't see how you can stop her.

A、Seeing that
B、But for
C、As for
D、As to
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