题目内容
21、
Every means _____________ prevent the water from ___________.
A. is used to , polluting B. is used to, polluted
C. are used to , being polluted D. is used to , being polluted
试题答案
21、D
Every means _____________ prevent the water from ___________.
A. is used to , polluting B. is used to, polluted
C. are used to , being polluted D. is used to , being polluted
查看习题详情和答案>>Every means ______ prevent the water from ______.
A. are used to; polluting B. is used to; polluting
C. is used to; polluted D. is used to; being polluted
查看习题详情和答案>>Every means _____ prevent the water from _____.
A. are used to; polluting B. will be used to; polluting
C. is used to; polluted D. is used to; being polluted
Every means _____ prevent the water from _____.
|
A．are used to; polluting |
B．will be used to; polluting |
|
C．is used to; polluted |
D．is used to; being polluted |
查看习题详情和答案>>
Every means ______ prevent the water from ______.
|
A．are used to; polluting |
B．is used to; polluting |
|
C．is used to; polluted |
D．is used to; being polluted |
查看习题详情和答案>>
Every means ______ prevent the water from ______.
A．are used to; polluting B．is used to; polluting
C．is used to; polluted D．is used to; being polluted
查看习题详情和答案>>Every means ______ prevent the water from ______.
A．are used to; polluting B．is used to; polluting
C．is used to; polluted D．is used to; being polluted
查看习题详情和答案>>Every means ______ prevent the water from ______.
A．are used to; polluting B．is used to; polluting
C．is used to; polluted D．is used to; being polluted
查看习题详情和答案>>