The keen view television is ( ) selling well, even though the advertising campaign just started.
A.once
B.often
C.previously
D.already
【答案】D。“即使广告才开始，keen view电视的销售就…很火爆了。”选项A：曾经、一次;选项B：常常;选项C：之前、以前;选项D：已经。根据句意可知补充“已经火爆”的状态更合适，故本题正确答案选D。
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