【題目】All these gifts must be mailed immediately __________ on time for Christmas.

A. in order to have received

B. in order to receive

C. so as to be received

D. so as to be receiving

【答案】 C

【解析】考查目的狀語。句意：所有這些禮物必須立即被寄走，以便在圣誕節(jié)按時被收到。

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