M5U2 语法巩固练习I. 单项选择1.---My son has a heart trouble.---Did the doctor find it difficult______?A.treating B.in treating C.for treating D.to treat2.The problem____at present has something important to do with our living conditions.A.discuss B.to be discussing C.being discussed D.to discuss3.The first thing that probably needs_______is to ask your mother’s advice.A.to do B.to be done C.being done D.be done4.---What has made her so sad? ----______in the physics examination.A.Failed B.Since she failed C.Failing D.Because of failing5.______,a man who expresses himself effectively is sure to succeed more rapidly than a man whose command of language is poor.A.Other things being equal B.Other things were equalC.To be equal to other things D.Other things to be equal6.All things ______,the planned trip will have to be called off.A.considered B.being considered C.considering D.to be considered7.The speech______, a lively discussion started.A.being delivered B.was delivered C.be delivered D.having been delivered8.The man in the corner confessed to_______a lie to the manager of the company.A.having told B.be told C.being told D.have told9.Mike used to look hurt and surprised when______.A.scolded B.scolding C.to scold D.having scolded10.The pressure______ causes Americans to be energetic, but it does put them under a constant emotional strain.A.to compete B.competing C.to be competed D.having competed11.Careful surveys have indicated that as many as 50 percent of patients don’t take drugs______directed.A.like B.so C.which D.as12. The professor could hardly find sufficient grounds _______his arguments in favor of the new theory.A.to be based on B.to base on C.which to base on D.on which to base13. The project______by the end of 20...
