We are afraid that we shall have to charge more for the design atedpacking, as it calls _____

We are afraid that we shall have to charge more for the design atedpacking, as it calls ______ extra labor and cost.

We are afraid that we shall have to charge more for the design atedpacking, as it calls ______ extra labor and cost.
【正确答案】：for
【题目解析】：call for要求，需要

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