The traffic rule says young children under the age of four and less than 40 pounds must be in a child safety seat．
| A．being weighed | B．weighed | C．weighing | D．to weigh |
In English colleges, classes are often arranged in freer and opener______and many jobs are designed for students.
| A．grades | B．ranks | C．customs | D．patterns |
— What great trouble I have solving this problem now！
—_____ my advice, you ________less trouble.
| A．If you had taken, would have had | B．If you took, would have |
| C．If you had taken, would have | D．If you take, will have |
As is well known to us all, in China pigeons stand for peace. However, in India the wheel in its national flag is also a _______of peace.
| A．symbol | B．sign | C．mark | D．example |
It doesn’t make a(an)_______to me whether you go or stay.
| A．difference | B．point | C．deal | D．effort |
How did it______ that humans speak so many different languages?
| A．come out | B．come off | C．come about | D．come round |