-He didn’t go to the concert yesterday did he?-.He was busy studying for the tests all da

问题补充：

-He didn’t go to the concert yesterday, did he?

-.He was busy studying for the tests all day.

A. No, he didn’t

B. Yes, he did

C. No, he did

D. Yes, he didn’t

答案：

A. No, he didn’t

B. Yes, he did

C. No, he did

D. Yes, he didn’t

解析：根据语境可知我说英语没有Bill好，但我擅长汉语。speak是谓语动词，故用副词来修饰；而固定短语be good at sth表示在某些方面做的比较好，故选A。