¡ªIsn¡¯t it a great surprise that I happened to meet my university English teacher at the South Bank Parkland last week?
¡ªHow long ____ you _____ each other, then?
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I ______ you for a long time. Where ______ you ______?
A£®Didn¡¯t seen; did, goB£®didn¡¯t see; have, gone
C£®haven¡¯t seen; have, beenD£®haven¡¯t seen; have gone

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Every means ______ prevent the water from ______.
A£®are used to; pollutingB£®is used to; polluting
C£®is used to; pollutedD£®is used to; being polluted

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The cause he had devoted himself to __________a perfect success.
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¡ªI¡¯m sure Andrew will come out first in this gymnastic competition.
¡ªI think so. He ______  for it for months.
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--- Had we been more careful, the accident might not have happened.
--- But we _____ at that time.
A£®hadn¡¯tB£®didn¡¯tC£®weren¡¯tD£®might not

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If it is fine tomorrow, we ______ a football match.
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¡ª Is Tom still smoking?
¡ª No. By next Saturday he ____ for a whole month without smoking a single cigarette.
A£®will goB£®will have goneC£®will have beenD£®has been going

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¡ªWhere is Peter? ¡ªHe _____ to Shanghai.
A£®went B£®had gone C£®has been D£®has gone

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