问题补充:
If you really want to pay me back, I hope you see someone in need, you should give him a hand.
A. whatever
B. whenever
C. however
D. whichever
答案:
A. whatever
(答案→)B. whenever
C. however
D. whichever
解析:whatever无论什么;whenever无论什么时候;however无论怎样;whichever无论哪一个。句意:如果你真的想报答我,我希望你无论什么时候看见有人需要帮助时,你能帮他一把。结合语境可知选B。