A.has he worked; did he make | B.he has worked; he made |
C.he has worked; has he made | D.has he worked; he made |
A.had been found | B.was found | C.has been found | D.would be found |
A.is fixing on | B.has fixed on | C.is being fixed on | D.had been fixed on |
A.were tested | B.will be tested | C.are being tested | D.have been tested |
A.is World Expo 2010 | B.World Expo 2010 is |
C.has World Expo 2010 been | D.World Expo 2010 has been |
A.expects | B.is expected | C.is expecting | D.has expected |
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