c. ought have come

　　d. ought to have come

　　22.The elephants ought ______ hours ago by the keepers.

　　a. to be fed

　　b. to feed

　　c. to being fed

　　d. to have been fed

　　23.“I wonder why they’re late.” “They ______ the train.”

　　a. can have missed

　　b. could miss

　　c. may have missed

　　d. might miss

　　24.“Tom graduated from college at a very young age.”

　　“He ______ have been an outstanding student.”

　　a.

　　must

　　b. could

　　c. should

　　d. might

　　25.You ______ the examination again since you had already passed it.

　　a. needn’t have taken

　　b. didn’t need to take

　　c. needn’t take

　　d. mustn’t take

　　26.He is really incompetent! The letter ______ yesterday.

　　a. should be finished typing

　　b. must be finished typing

　　c.must have finished typing

　　c. should have been finished typing

　　27.The boy told his father that he would rather ______ an astronaut.

　　a. become

　　b. to become

　　c. becoming

【山东省郯城第三中学高中英语语法大全：第5章 助动词（含巩固练习）】相关文章：

★ 山西省永济市涑北中学高三英语总复习：美文欣赏（2）（Invitation）

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (15)

★ 安徽省淮南市2014高考英语一轮单项选择及文章训练（16）及答案

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (74)

★ 2017高考四川省广安市英语阅读理解一轮系列训练：18（含解析）

★ 河南省商丘市第三高级中学2013届高考英语第二轮专项复习《名词》教学设计（一）

★ 2014年牛津译林版高中英语总复习（第1轮）同步练习 M4《Unit 3　Tomorrow s world》

★ 河南省三门峡市2014高考英语一轮（暑假）基础训练（1）附答案

★ 湖南省长沙县实验中学2016届高三英语二轮复习书面表达复习重点话题指导专题03 辩论对比话题指导（学生版）

★ 河南省三门峡市2014高考英语一轮（暑假）基础训练（6）附答案