Jim can't decide ____ to do next .A.what B.how

问题描述:

Jim can't decide ____ to do next .A.what B.how
为什么选A,用how也翻译得通啊?请详解,

此句为宾语从句,从句中的do是及物动词,欠宾语,所以只能用what ,how 只能表示如何,怎样,不能充当宾语