1 . The river is 300 miles in ________(long). (所给词的适当形式填空）

2 . This book is ________ that one.

A．as three times long as	B．three time as long as
C．three times the length of	D．three times as longer as

3 . The area can be easily worked out if you know the l________ and the width.（根据首字母单词拼写）

4 . The room is twice the l________ of the kitchen. (根据首字母单词拼写)

5 . - How big is your school's swimming pool?
-It's 25 metres in l________ and 8 metres in width. (根据首字母单词拼写）

6 . Amur River, as the third longest river in China, is second only to the Yangtze River and the Yellow River in l______. (根据首字母单词拼写)