They will not start the project until the board chairman ______ back from South Africa.

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问题 They will not start the project until the board chairman ______ back from South Africa.

选项 A、will come
B、is coming
C、came
D、comes

答案D

解析 本题考查从句时态用法。在not...until...结构中,当主句用一般将来时,until引导的从句,用一般现在时。所以D项为正确答案。在由if, unless,supposing,as long as,in case,when,until等词语引导真实条件句或时间状语从句中,主句往往是一般将来时或祈使句,从句要用一般现在时表示将来的情况。【例句】:(1)You’ll be late for class if you don’t hurry.(如果你不赶紧,上课就要迟到了。)   (2)We will find a way to overcome the difficulty,as long as we don’t lose heart.(只要我们不灰心,我们就能找到克服困难的办法。)
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