Definition: used to refer to the thing, situation, or idea that has already been talked about Level: A1
我喜欢这本书，它很有趣。
I like this book. ___It is interesting.
我的手机在哪里？它在桌子上。
Where is my phone? ___It is on the table.
你把它落在电话旁边了。
You left ___it by the phone.
