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        1. After Steven sent some e-mails ,he______ surfing the Internet.

          A.starts B.has started C.will start D.started

          D

          解析試題分析:句意:Steven發(fā)了一些電子郵件之后,他就開始上網(wǎng)沖浪。start開始,是一個動詞。根據(jù)句意和上句話中Steven sent some e-mails可知,這里應(yīng)該用一般過去時。故選D。A是一般現(xiàn)在時;B是現(xiàn)在完成時;C是一般將來時。
          考點:考查動詞時態(tài)。

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