Plastic bags are provided for our conven
问题:
Plastic bags are provided for our convenience but they have also_______ the pollution of the environment.
A.adapted to
B.turned to
C.contributed to
D.looked forwarded to
Plastic bags are provided for our convenience but they have also_______ the pollution of the environment.
A.adapted to
B.turned to
C.contributed to
D.looked forwarded to