I don't think it is useful for me to finish the task ----?A can it B is it C can't it D isn't it 为什么

问题描述:

I don't think it is useful for me to finish the task ----?A can it B is it C can't it D isn't it 为
什么

前否后肯 B

B
首先根据前面内容可以排除A和C,然后,由于前面的句子是否定句,后面的反问就应该用肯定的.