I don't know _______ he will come tomorrow or not.________ he comes,I'll tell you.[ ]A. if

题目简介

I don't know _______ he will come tomorrow or not.________ he comes,I'll tell you.[ ]A. if

题目详情

I don't know _______ he will come tomorrow or not.________ he comes,I'll tell you.       
[     ]
A. if; Whether      
B. whether; Whether    
C. if; That    
D. whether; If
题型:单选题难度:中档来源:同步题

答案

D

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