学习语法首先要学习句子，因为句子是人类语言的核心，通过对句子的分析理解，可以更好的掌握语法。下面是小编整理的英语四级语法模拟练习(7)，希望对你的语法学习有所帮助！
61. He proved himself a ________ successor to the former Prime Minister.
A. worthwhile B. worthiness C. worthy D. worth
62. Your radio is too loud, turn the ________ down.
A. volume B. voice C. sound D. tone
63. The Channel Tunnel is one of the biggest engineering projects ever ________.
A. understated B. undertaken C. undergone D. underneath
64. He comes from a poor country village in the mountains, so it's very hard for him to pay the whole school year's ________ at one time.
A. money B. fare C. fees D. tuition
65. Anthony is a very ________ person and never wastes anything.
A. miserly B. thrifty C. economic D. conservative
66. He is seriously ill because his girlfriend has just deserted him. Why don't you try some occupational ________ to remove his mind from distress?
A. operation B. therapy C. injection D. medicine
67. The government used their emergency powers to ________ the truth about the accident.
A. suppress B. manipulate C. control D. manage
68. The ________ of the member countries is supposed to be held recently at Geneva.
A. summit B. summary C. suffering D. summon
69. The ghostly presence was just a (n)_________ sensation of some people.
A. objective B. subjunctive C. subjective D. objected
70. The company is on the verge of bankruptcy, and thousands of jobs are at ________.
A. danger B. loss C. threat D. stake
61. 答案为C。worthwhile 意思是"值得花费时间、金钱或精力的"。worthy 可以表示"值得尊重或者考虑的"，用这一意思时通常做定语。worthiness 是worthy 的名词形式。worth 用作表语，意思是"有某种价值的;值得(做某事)"。本句需要填入一个作定语的形容词，所以， C 是正确答案。
62. 答案为A。volume 意思是"音量，响度"，voice 意思是"嗓音"，sound 意思是"声，声音，声响"，tone 指"音调，音质;语气，腔调;(乐器的)音质，音色"。
63. 答案为B。understate 意思是"有节制地陈述或表达;少说，少报"，undertake 意思是"承担，负起..的责任"，undergo 意为"经历，经受;接受，承受"，underneath 意为"在.. 的下面(介词);在下面，向下(副词);底部，底面(名词)"。
64. 答案为D。money 泛指"金钱，货币";fare 指(公共汽车、轮船、计程车等的)票价; fee 指付给私人教师、医生等的服务费，酬金;tuition 尤指大专院校的学费。
65. 答案为B。miserly 意思是"似守财奴的，吝啬的"，thrifty 意思是"节检的，节约的"， economic 意思是"经济学的，经济的"，conservative 意思是"保守的，守旧的"。
66. 答案为B。operation 指"手术"，therapy 指"疗法"，injection 指"注射"，medicine 指"医术，医学;药"。occupational therapy 指"职业疗法"，即给患者创造性或生产性工作以治疗其身心某些疾病的方法。
67. 答案为A。suppress 意思是"阻止..被知道或看到"，manipulate 指"熟练地控制或操纵(某事物)"，control 意思是"控制"，manage 意思是"负责(谋事物)，管理，经营"。
68. 答案为A。summit 意思是"峰会，首脑会晤"，summary 意为"小结"，suffering 指肉体或内心的痛苦，summon 意为"传唤，传讯;(法院的)传票"。
69. 答案为C。objective 意为"客观的"，subjunctive 意为"虚拟语气的"，subjective 意为"主观的"，object 意思是"反对，抗议"，作动词。
70. 答案为D 。at a loss 意思是"不知如何是好，茫然，不知所措"，at stake 指"凶吉难卜，好坏无法预料"。可以说in danger 或under threat,但不可以说at danger 或at threat
