问题描述：
I have no doubt ___ he will overcome all his difficulties.
a.which
b.what
c.that
d.if
请问选哪个?选和不选的原因?顺便把句子翻译成中文.
a.which
b.what
c.that
d.if
请问选哪个?选和不选的原因?顺便把句子翻译成中文.
问题解答：
我来补答展开全文阅读