问题

In those days our primary ______ was to provide peoplewho were trapped in the snowstorm with food and healthcare

A:in preference to
B:in place of
C:in agreement with
D:in exchange for

正确答案是：

同类题型

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_____ the earth to be flat, many feared that Columbus would fall off the edge of the earth. [ ]

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You’d better ____ smoking, for it does great harm to your health.