摘要: The UN has warned that, natural systems like forests and wetlands disappear , mankind is losing the services they provide such as protection from extreme weather. A. while B. once C. when D. as
网址:http://m.1010jiajiao.com/timu3_id_2526871[举报]
The UN has warned that,_____ natural systems like forests and wetlands disappear , mankind is losing the services they provide such as protection from extreme weather.
A. while B. once C. when D. as
查看习题详情和答案>>
The UN has warned that,_____ natural systems like forests and wetlands disappear , mankind is losing the services they provide such as protection from extreme weather.
- A.while
- B.once
- C.when
- D.as