I go into the classroom and i have a book in my hand.改同义句

问题描述:

I go into the classroom and i have a book in my hand.改同义句
I go into the classroom()a book()my hand.

with,in在阳台上向外看沙滩很有趣。翻译(初一水平)It's very interesting___________________.to watch the sand from balcony.