asked to help me with my lessons he always refused saying he was too busy.A. Whatever B

问题补充：

asked to help me with my lessons, he always refused, saying he was too busy.

A. Whatever

B. Whenever

C. Whoever

D. However

答案：

A. Whatever

(答案→)B. Whenever

C. Whoever

D. However

解析：考查词义辨析：A. Whatever无论什么B. Whenever无论什么时候C. Whoever 无论是谁D. However无论怎样，句意：每当没请求帮助我的英语的时候，他都是拒绝，说自己太忙了。选B。