I don't know____he will come tomorrow.Don't worry.____he comes.I'_英语解答

I don't know____he will come tomorrow.Don't worry.____he comes.I'll let you know
A.whether.If B.if,Whether C.when,Whether D.that,if

人气：377 ℃　时间：2019-11-12 06:46:34

解答

A 因为whether与前面的句子不要用逗号隔开,而if却要用逗号隔开.