Ⅰ.单句填空
1.We must address ourselves the problem of traffic pollution.
2.—What is the price of petrol these days?
—Oh,it (rise)sharply since last month.
3.Jack is late again.It is (type)of him to keep others waiting.
4.Fitness is important in sports,but of at least (equality)importance are skills.
5.Several new railways are construction in China.
