高三英语一轮复习---高中英语情态动词练习题（一）

情态动词训练题（一） 1、Since nobody gave him any help，I am sure that he________have done the research on his own. A. should     B. would   C. could    D must 2、 — How is the smog control going on in our capital city? — It couldn’t be worse. You ________ believe Beijing upgraded the smog alert from yellow to orange and then red again yesterday. A. won’t  B. mustn’t   C. needn’t  D. shouldn’t 3、 The Chinese government advocates that countries along the modern silk road        work  together and share future success. A. must B.  might   C.  should  D.  could 4、— Hi, Tom．Any idea where Mary is? — She                      in the reading room．I saw her there just now． A．shall be          B．should have been C．should be      D．might have been 5、-- Bob with Scrooge's company for 10 years in poor working conditions before he retired． --- Oh, dear．That ______ the most trying part of his life． A．had been; could have been