单项选择题

A．Collecting information about the project.
B．Writing a paper about extinct animals.
C．Working on a cattle ranch.
D．Analyzing buffalo behavior.
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单项选择题
A．Freshman year was in a mess.B．Giving him a chance.C．Giving him some time.D．Writing some more letters.
A．Freshman year was in a mess.
B．Giving him a chance.
C．Giving him some time.
D．Writing some more letters.
填空题
sustaining→sustained
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