【题目】My mother looks serious, ______ she's kind to me. ( )
A.and B.but C.so
【答案】B
【解析】
略
上一篇 69+74+31=74+69+31是运用了加法交换律和结合律。(_)...
下一篇 选词填空 from for on at withTurn right _...
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