They haven't decideed if ( )A will they take a picnic B they take a picnic C they 'll take a picnic D they would take a picnic

问题描述:

They haven't decideed if ( )
A will they take a picnic B they take a picnic C they 'll take a picnic D they would take a picnic

D
if是如果,要用虚拟语气,也就是用过去式表示

答案:C
解释:if 这里引导宾语从句,从句用陈述语气。
翻译:他们还没有决定是否去野炊。
祝你学习进步,更上一层楼!请记得采纳,谢谢!(*^__^*)

C they 'll take a picnic
宾语从句,语序用陈述句语序,时间用将来,因为haven't decideed 是现在,决定的是将来的动作.

D,陈述句语序+虚拟语气