When snow ____ on top of a building during the winter, the weight sometimes weakens the construction, and occasionally causes the roof to collapse.

Directions: For this part, you are allowed thirty minutes to write a composition on the topic Should College Students Take Part-time Jobs? You should write in at least 120 words, and base your composition on the outline (given in Chinese) below.1. 人们对大学生打工的不同看法2. 大学生究竟是否应该打工

I take it for granted that he must be sentenced____.

The tutor asked his students to leave a wide ____ when typing their essays.

Bring the umbrella on the picnic even though you don’t anticipate ____ it.

The flight was supposed to take off at nine o’clock but ____ we had to wait until ten.

Never before ____ such a smoke in the room.

No one ____ that to his face.

I don’t doubt ____ the plan will be well-conceived.

The train arrived twenty minutes late, but we were not told what caused the ____.

Who allowed you ____ my car?