问题
选择题
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
答案
答案:D
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
答案:D