By the end of this year the factory (produce) ______ 20,000 cell phones.

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问题 By the end of this year the factory (produce) ______ 20,000 cell phones.

选项

答案will have produced

解析 本题考查的是动词时态中的将来完成时。将来完成时表示将来某一时刻之前或某一行为发生之前所完成的动作,由"will/shall+have+动词的过去分词”构成,常与by the time或by the end of等结构连用。如:They will have repaired the machine by this time tomorrow.(他们明天这个时候能修好机器。)
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