I can't believe that they will grow vegetables successfully on the moon ,___?

问题描述:

I can't believe that they will grow vegetables successfully on the moon ,___?
空格里填什么?、 A.can I B.can't I C,will they D,won't they

当陈述部分含I think (believe ,suppose…)that…结构时,其反意疑问句须与从句的主、谓语保持一致,注意主句的主语必须是第一人称.
所以这句话应该选择 C.