【答案】Not only was he good at English __

题目：
Not only was he good at English ____. A but also good at maths B but also at maths C and also at maths D and also good at maths

答案：

B

解析：

他不但擅长英语,也擅长数学 not only .but also 不但…而且 A 有good ,前后重复