题目内容
All these gifts must be mailed immediately ________ in 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:
解析:
|
该题是考查动词不定式的被动式.All these gifts和receive的关系是被动关系. |
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