We stayed up all night, talking about___________had happened in the last few months.
A. what
B. which
C. that
D. why
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Mr. White treated the girl___________ his own daughter.
A. with
B. for
C. as
D. of
The food is surely ___________. It tastes very good and I enjoy eating it.
A. expensive
B. enough
C. strong
D. delicious
School days are said ___________ the happiest days in one′ s lifetime.
A. being
B. to be
C. have been
D. are
生物多样性不包括（）
A. 遗传多样性
B. 物种多样性
C. 环境多样性
D. 生态系统多样性
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