高考考试

【单选题】You should have put the milk in the icebox; I expect it ______ undrinkable by now.
A、became
B、had become
C、has become
D、becomes

网考网参考答案：C
网考网解析：
[解析] 主句谓语是现在时，从句可用任何所需要的时态。例如：He says his mother was an actress. 他说他母亲过去是演员。He says he will be an actor. 他说他将来要当演员。by now是与现在完成时连用的典型的时间状语，例如：I think they have finished the work by now. 我想到现在为止，他们已经完成工作了。I’ve met him twice by now. 到现在为止，我已见过他两次。这句话中by now与现在完成时连用，表示过去的动作对现在的影响。因此，C项是正确答案。“牛奶不能喝了”是过去的动作(没把牛奶放入冰箱)对现在的影响。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>