单项选择题

Is ______ true that the scientist will give us a lecture next week

A．this
B．that
C．it
D．what
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单项选择题
How about a game chess
A．I don't mind
B．Why not
C．I agree
D．Let's fight
单项选择题
Mr. Ross built a lab ______ when he was forty.
A．for his own himself
B．of him own
C．for his own
D．of his own
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