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            • 1.

              Generally speaking , ______according to the directions , the drug has no side effect .

              A.when taking
              B.when to take
              C.when taken
              D.when to be taken
            • 2.

              What a relief! We would still be wandering aimlessly in the woods ______ to bring a compass with you.

              A.should you forget                                          
              B.had you forgotten

              C.you should forget                                          
              D.you had forgotten
            • 3.

              When a tomb is opened, fresh air disturbs the viruses, which, if ______in, can result in illness or even death.

              A.having breathed     
              B.to breathe       
              C.breathed     
              D.breathing.
            • 4.

              The man we followed suddenly stopped and looked as if ______ whether he was going in the right direction

              A.seeing    
              B.to see   
              C.having seen   
              D.to have see
            • 5.

              --- Michael was late for Mr. Smith chemistry class this morning.

               --- __________? As far as I know, He never came late to class.

              A.How come      
              B.So what                
              C.Who cares    
              D.Why not
            • 6.

              Though ______ time and time again of the danger, he turned a deaf ear to them.

              A.warned
              B.being warned         

              C.he warned               

              D.was warned
            • 7.
              _______ available, many people would have died from sickness or even small wounds.

                

              A.If penicillin would not be           
              B.Were penicillin not
              C.Had penicillin not been                
              D.If penicillin should not be
            • 8.

              As we all know, every minute, when____ full use of _____ our lessons, will do good to our students.

              A.made; studying        
              B.made; to study     
              C.makes; studying    
              D.makes; to study
            • 9.

              —What is upsetting you, dear?

                 —______ it is necessary for us to move our home to the city now.

              A.When
              B.How
              C.Where
              D.Whether
            • 10. I was wondering if we could go skating on the weekend.
              — _____ good.
              [     ]

              A. Sound
              B. Sounded
              C. Sounding
              D. Sounds
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