摘要： -- Have you thought of a topic for your article yet? -- No, I a lot about it, but I haven’t decided. A. will think B. was thinking C. had thought D. have been thinking
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–Have you thought of a topic for your article yet?
–No, I _____ a lot about it, but I haven't decided.
A. will think B. have been thinking C. had thought D. was thinking
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