The boy is _________of the two brothers.

What a traffic jam! I’m going to be late again.—Yes. The traffic now is than it used to be.

You just think of yourself! You kept me waiting for at least three hours．—-I am sorry that you _____ think so.

will never understand how it________that you were an hour late on such a short journey.[ ]

（2014山东省实验中学高三第二次模拟考试）7．Perhaps it will never be known __________ he did with those materials on the incident．