摘要：9．A 考查虚拟语气.由下文的could have done来看.这里使用的是虚拟语气.四个选项中只有but for 有这种方法.
网址：http://m.1010jiajiao.com/timu3_id_2558319[举报]
The Coca-Cola Company ___________ wiser to leave the old Coke alone and introduce New Coke as a brand extension. 【黑龙江省哈市五县2011年高考模拟试卷英语卷（22）】【情态动词及虚拟语气】
A. might have been B. can’t have been
C. must have been D. can have been
查看习题详情和答案>>
If I you would drop in，I would have stayed home, waiting for you．【北京市师大二附中2011届高三第三次模拟考试】【虚拟语气】
A. have known B. knew C. would know D. had known
查看习题详情和答案>>
He suggested your attention ______ on your study. 【江苏省泰州市2010―2011学年度高三调研考试】【情态动词及虚拟语气】
A. should fix B. fix C. fixed D. be fixed
查看习题详情和答案>>