The little boy_his eyes wide because he was very surprisedA.to open B.open C.opening D.opened
问题描述：
The little boy_his eyes wide because he was very surprised
A.to open B.open C.opening D.opened
答
D
答
because引导原因状语从句，从句是过去式，主句也用过去式 所以D
答
D 因为这是一个句子,要完整,所以排除AC然后后面句子是过去式,所以用过去式.
答
D,因为opened为过去式，由because引到的原因状语从句里有个was，也是过去式，这里应该照应、