摘要：29．Only when the villagers were faced with water shortage how serious the problem of water pollution was. A．did they realize B．will they realize C．they did realize D．were they realized
网址：http://m.1010jiajiao.com/timu_id_1698394[举报]
Only when the villagers were faced with water shortage___ how serious the problem of water pollution was．
- A.did they realize
- B.will they realize
- C.they did realize
- D.were they realized
Only when the villagers were faced with water shortage___ ____ how serious the problem of water pollution was．
A．did they realize B．will they realize
C．they did realize D．were they realized
查看习题详情和答案>>