【题目】--- When is your birthday? ( )
---My birthday is ________ 7th, July.
A. on B. in C. at
【答案】A
【解析】
略
上一篇 鸡兔同笼,头有20个,脚有56只,那么兔有( )只。A.12 B.13 C...
下一篇 --- _ do you come to school? ( )...
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