You should have put the milk in the refrigerator. I expect it______undrinkable.
A、
became
B、
has become
C、
had become
D、
becomes
【正确答案】
B
【答案解析】
解析:第一句中的should have put是对过去事实的虚拟,表明“并没有放进冰箱”,因此,后句表达的意思是“它现在已经变得不能喝了”,用现在完成时表过去某一行为造成的结果。
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