优优班--学霸训练营 > 知识点挑题
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            • 1. The little boy ________ in the mud all the morning. No wonder he is dirty from head to foot.
              A.has played
              B.is playing
              C.has been playing
              D.was playing
            • 2. —I don't remember having ever seen Mark since last week. Has he gone somewhere?

              — Not really. He_______his newly-bought apartment.

              A.has been decorating
              B.was decorating
              C.has decorated
              D.decorated
            • 3. Mary really________hard on her book and thinks she will have finished it by Satuntay.
              A.worked
              B.has worked
              C.had worked
              D.has been working
            • 4. There is no doubt ____ the world climate _____ in recent years because of humans activities.

                  

              A.that; changed
              B.whether; has changed 

                  

              C.that; has been changing
              D.what; is changing
            • 5.

              —Have you had any letters from him?

              —No, I haven’t, but my wife    him regularly. 

              A.has heard from
              B.has been hearing from
              C.had heard from
              D.hears
            • 6. --- I feel so tired.

               --- No wonder. You__________ in front of that computer too long.

              A.work
              B.are working
              C.have worked
              D.have been working
            • 7.

              The girl has a great interest in sport and ______ badminton classes twice a week over the last three years.

              A.took
              B.is taking
              C.takes
              D.has been taking
            • 8.

              —Hi, Tracy, you look tired.

              —I am tired. I    the living room all day. 

              A.painted
              B.had painted
              C.have been painting
              D.have painted
            • 9.

              Don’t interrupt me. I ________ letters all morning and have only finished five.

              A.write
              B.have written
              C.have been writing
              D.am writing
            • 10.

              Our Professor won’t tell us the solution to the difficult problem until we        about it for at least fifteen minutes.

              A.argue
              B.argued
              C.will have argued
              D.have been arguing
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