–– Will you go to the park after school? ––No I’ll go home for my mother is waiting for

问题补充：

–– Will you go to the park after school?

––No, I’ll go home, for my mother is waiting for me for supper.

A. along

B. straight

C. on

D. straightly

答案：

A. along

(答案→)B. straight

C. on

D. straightly

解析：四个选项含义分别是沿着、一直、在上面和直接的，通过分析B选项符合题意。