The question of _______ English will continue changing in the future is easy _______.
A.if; to be answered | B.whether; to be answered |
C.whether; to answer | D.If; to answer |
推荐套卷
The question of _______ English will continue changing in the future is easy _______.
A.if; to be answered | B.whether; to be answered |
C.whether; to answer | D.If; to answer |