有这样一道选择题:_ can help others should give a hand to_ needs help.A. Whoever...whoeverB. Whoever...whomeverC. Whomever...whomeverD. Whomever... whoever 大多数同学都误选B,他们误认为“whom-ever”接在介词“to”的后面,应该用宾格,其实“to”的宾语并非“whoever”,而是“Whoeverneeds help”整个从句。“whoever(whomever)”引