优优班--学霸训练营 > 知识点挑题
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            • 1. Huawei ______its flagship devices in Europe since 2014, which is a strong indication that the Chinese company is shifting its focus from China to developed markets.
              A.is introducing
              B.is introduced
              C.will be introduced
              D.has been introducing
            • 2. —How is your project coming along?

                 — I _______ on it. It will be completed in two weeks.

              A.worked
              B.have worked
              C.have been working
              D.had worked
            • 3. —I have got a headache.

              —No wonder. You      in front of that computer too long.

              A.work
              B.are working
              C.have been working
              D.worked
            • 4. I __________ for the No.5 bus for over half an hour, but none of them _____ yet
              A.have been waiting ; has appeared
              B.have been waiting ;appeared
              C.have waited; has appeared
              D.have waited; appeared
            • 5. ---Several hotels in this area are closing down.

              ---That’s because tourism itself ______ since last year.

              A.is declining
              B.declined
              C.has been declining
              D.had declined
            • 6. --- I don’t remember having ever seen John since last week. Has he gone somewhere?

                 --- Not really. He _______ his newly-bought apartment.

              A.has decorated
              B.was decorating
              C.has been decorating
              D.decorated
            • 7. I heard this song on the radio and I’ve been ___________ (吹口哨) it all day.
            • 8. 自从退休后,他一直忙于撰写回忆录。

              Since he retired, he _________ __________ _________himself in writing his memories.

            • 9. Forsome time now, world leaders _____ theurgent need to reduce greenhouse gases.
              A.had pointed out
              B.pointed out
              C.were pointing out
              D.have been pointing out
            • 10. — Guys, I am really worn out!  I can’t walk any further!

                 — We should have a rest. We ______ the cave a whole day.

              A.exploring
              B.are exploring
              C.have been exploring
              D.explore
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