You should have put the milk into the ice-box; I expect it______

单选题 You should have put the milk into the ice-box; I expect it_______undrinkable by now.

A．became
B．had become
C．has become
D．becomes

参考答案C

解析:【答案】C。解析：本题考查时态。从句意分析，牛奶已经变质，不能喝了，属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，故选C。

单选题 The popularity of the film shows that the reviewers' fears were completely_______

A．unjustified
B．unjust
C．misguided
D．unaccepted

单选题 The head of the Museum was_______and let us actually examine the ancient manuscripts.

A．promising
B．agreeing
C．pleasing
D．obliging

单选题 Was it five o'clock_______the fire broke out?

A．when
B．that
C．which
D．in which