单项选择题

A．They made them by knives.
B．They found adequate stones.
C．They used bones of animals.
D．They made tools by hitting stone against stone.
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单项选择题
A．She does some teaching work.B．She does her homework.C．She works as a babysitter.D．She attends weekend lessons to improve her English.
A．She does some teaching work.
B．She does her homework.
C．She works as a babysitter.
D．She attends weekend lessons to improve her English.
单项选择题
A．She will attend a cross-cultural lecture.B．She will take part in a charity dance.C．She will talk to the president of Harvard University.D．She will take the day off to have a good rest.
A．She will attend a cross-cultural lecture.
B．She will take part in a charity dance.
C．She will talk to the president of Harvard University.
D．She will take the day off to have a good rest.
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