_____of the swamps have become_____. [ ]
问题:
_____ of the swamps have become _____. [ ]
A. Any; pollute
B. Some; pollution
C. Some; polluted
D. Any; polluted
_____ of the swamps have become _____. [ ]
A. Any; pollute
B. Some; pollution
C. Some; polluted
D. Any; polluted