I didn't know what color . Is it red?A.is the bag B. the bag isC._英语解答

I didn't know what color . Is it red?
A.is the bag B. the bag isC.was the bagD.the bag was
请选择并说明理由.

人气：430 ℃　时间：2020-03-24 08:41:21

解答

D
因为know后面为一个宾语从句,所以要用倒装,而谓语动词的时态应该与主句的时态一致.