per is due next month, and I am working seven days ______ week, often long into______night.

Why do you make friends with Joe—He isn’t a good student，but he is friendly.

We usually go to schoolon weekdays, and sometimes go to cinemaat weekends.

填入下面一段文字横线处的语句，最恰当的一句是（ ）20 世纪50 年代后，随着。 然而，有趣的是，在没有确凿医学证据证明吸烟有害健康的二十世纪初，中国已经出现了数次不吸纸烟运动。

Do you think teenagers should be allowed to make their own ________________—No, I don’t agree with this.