【题目】All these donations must be delivered immediately________in time for Christmas.
A. so as to have received B. in order to be received
C. so as to receive D. in order to be receiving
在线课程【答案】B
【解析】考查不定式。句意：所有捐赠都必须被立即寄出，以便于在圣诞节前能及时被收到。不定式作目的状语，根据句意又应该是不定式的被动语态to be done，故选B.