A-A+
You should have put the yogurt into the fridge
问题详情
You should have put the yogurt into the fridge, I expect it ______ undrinkable by now.
A．became
B．had become
C．has become
D．becomes
参考答案
正确答案：C
解析：从句意分析，酸奶已经变质，不能喝了，属于过去发生的动作对现在造成的影响，再加上by now 是现在完成时的典型时间状语，I expect=I think= I suppose 意思为我想、我认为。故选C。
