21.Elizabeth has bought _____N-shaped cottage which can date back to _____early 1920s.
|
A. a, the
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B. an, /
|
C. an, the
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D. a, /
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22. ——Did you listen to Mr. Smith’s lecture? It was amazing!
——I wish I had, but I _____on my paper that should have been finished earlier.
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A. worked
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B. was working
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C. had worked
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D. have worked
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