单项选择题

A．4 weeks.
B．6 weeks.
C．8 weeks.
D．10 weeks.
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单项选择题
A．By forcing them farming.B．By affecting the quality of soils.C．By adding chemicals and pollute the waterways.D．By affecting the environments they live in.
A．By forcing them farming.
B．By affecting the quality of soils.
C．By adding chemicals and pollute the waterways.
D．By affecting the environments they live in.
单项选择题
A．She will help him.B．She finished hers two days ago.C．She completed her work very quickly.D．She is still doing the project.
A．She will help him.
B．She finished hers two days ago.
C．She completed her work very quickly.
D．She is still doing the project.
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