句型转换 （每空一词，每小题2分，共10分）
Li Na plays tennis every day. (就划线部分提问)
does Li Na play tennis?
I went to summer camp on vacation. (就划线部分提问)
you       on vacation?
This book is less interesting than that one. (同义句)
That book is               than this one.
He visited his uncle yesterday. (改为否定句)
He            his uncle yesterday.
Tom is 175cm, Sam is also 175cm. (同义句)
Tom is ____    _ as Sam.