If we travel a short distance, we should
问题:
If we travel a short distance, we should walk _____ taking a bus. Then we’ll be greener people.
A.instead of
B.rather
C.while
D.but
If we travel a short distance, we should walk _____ taking a bus. Then we’ll be greener people.
A.instead of
B.rather
C.while
D.but