Maths still () very diffcult for me,though I have done my best.A.looks B.seem C.is D.are

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Maths still () very diffcult for me,though I have done my best.A.looks B.seem C.is D.are
Maths still () very diffcult for me,though I have done my best.A.looks B.seem C.is D.are

Maths still () very diffcult for me,though I have done my best.A.looks B.seem C.is D.are
选择A
首先不能选C和D,因为如果是系动词的话,句子的顺序应该是 is/are still
然后看剩下的A和B,maths虽然结尾是s,但他是单数,所以应该选A