问题
Last week Lily’s father bought her__________MP4 as___________birthday present.
A:/；a
B:an；an
C:a；a
D:an；a
B:an；an
C:a；a
D:an；a
正确答案是：
同类题型
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When we hurried to the meeting room, the meeting _______.
It is said that the gravity on Mars is only about __________ of the gravity on earth．