The boy works hard Maths,but he isn't good _ it. A.at,on B.at,at C.on,at D.on,on

分类: 作业答案 • 2022-04-27 18:45:52

问题描述：

The boy works hard ____ Maths,but he isn't good _____ it. A.at,on B.at,at C.on,at D.on,on

答

B
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The boy works hard ____ Maths,but he isn't good _____ it. A.at,on B.at,at C.on,at D.on,on