根据句意,用括号内所给词的适当形式填空。
6.The Yellow River is the second ________(long)river in China.
7.The Tv says it is much _______(cold) tomorrow than today.
8. The girl is writing a diary (careful) now.
9.Shanghai is the ____________(popular ) city in China,I think.
10.The next _____(perform) is Ben,and he is going to play a piece piano song..