用所给单词的适当形式填空：
The teacher___asked___（ask）us to do the exercise on Page 38.
Mary__was____（be）out when I called her.
句型转换：
His winter vacation was great.（对was great提问）
___How___ ___was___his winter vacation?
It's time to have dinner.（同义句替换）
____It's__time___for___dinner.
A history book is on the desk.（同义句替换）
___There___is a book___of___history on the desk.
She saw a cat climbing the tree.（改为一般疑问句）
__Did _____she___see____a cat climbing the tree?
They went to the beach last Sunday.（对the beach提问）
__Where____did they___go___last Sunday?