题目内容
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 |
A
句意:只有在村民面临水资源短缺形势时,他们才意识到水污染是多么严重。考查Only+when从句放在句首时,用部分倒装。
练习册系列答案
相关题目