用所给词的适当形式填空     （1）It is usuall-----(cro

用所给词的适当形式填空 （1）It is usuall_____(crowd)at weekends. (2) We use dictionaries_____(look)up the words. 2.句型转换. （1）They're talking about the weather.(对画线部分提问）划线部分是the weather__________they talking about? (2)Whose knife is this?(同义句） ______is this______?(3)There are over sixty students in our class .(同义句）There are _____ _____sixty students in our class. (4)My holiday was wonderful.(对划线部分提问）划线部分是wonderful _____ ______your holiday? (5)Mary studies very hard.(改为感叹句） ______ ______Mary studies!