l am not sure Tom will come here tomorrow________he comes here,l'_英语解答

l am not sure Tom will come here tomorrow________he comes here,l'll email you.
A whether;If B if ;Whether C.if If D.A&C

人气：429 ℃　时间：2019-10-14 02:21:44

解答

D.第一个blank应该是在sure 和tom 之间吧?那里用if、whether都可以.
后头那个是条件状语从句,主将从现,所以用if