Elephants have their own way to tell the
题型:选择题
问题:
Elephants have their own way to tell the shape of an object and _____ it is rough or smooth . [ ]
A. 不填
B. whether
C. how
D. what
Elephants have their own way to tell the shape of an object and _____ it is rough or smooth . [ ]
A. 不填
B. whether
C. how
D. what