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

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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
• The boy works hard ____ Maths,but he isn't good _____ it. A.at,on B.at,at C.on,at D.on,on
• she s____ very hard at school
• 一道英语问题 She works...She works in the school in front of the cinema.(对画线部分提问,一空一词,画线：in front of the cinema.）_____ _________ ________ she _______ ______?