I still have a question even now ( ) you were able to persuade them to support you last week....I still have a question even now ( ) you were able to persuade them to support you last week.A.that B.how C.who D.if

that
同位语从句
a question 指代you were able to persuade them to support you
翻译:我直到现在始终有一个疑问你是否能够在下周前说服他们来支持你。

A

选B；怎么能够劝服的；前面是个问题不可能用表示肯定的that；who 必须做主语或宾语，而后面句子完整，而且也翻译不通，if 是假设，后面是过去式，如果用if 就成虚拟语气了，主句要用would do 而主句用的是现在时have

if
前面是我有个问题 就是不肯定的意思 后面从句用whether/if

选择B,这是一句同位语从句,后面的you were able to persuade them to support you last week是question的同位语.解释为“甚至是现在我仍然有一个问题--你上周是怎样说服他们支持你的.”这样意思就通顺了.

D