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A. were watching B. had watched C. was watching D. had been watching

A. were watching B. had watched C. was watching D. had been watching

A.werewatching

B.hadwatched

C.waswatching

D.hadbeenwatching

正确答案:D
[解析]人们一直在焦虑地关注着,用过去完成进行时,指从过去的过去一直延续的状态。
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