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        1. I’m not sure ______ he will come tomorrow.
          A. that                    B. if                  C. when

          B

          解析試題分析:句意:我不確定是否他明天來(lái)。A. that沒(méi)有意義; B. if是否; C. when什么時(shí)間。根據(jù)tomorrow這里是if引導(dǎo)的賓語(yǔ)從句可以用將來(lái)時(shí),根據(jù)句意故選B。
          考點(diǎn):考查連詞的用法。

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