Where is the pencil 我怎么回答

Here it is.(在这里）
There it is.(在那里）
It's in/on/under/over the sth.｛在某物 里面/上面/下面/上面（垂直上方不接触物体表面）｝
It's on sb./the sth.right/left.（在某人/某物右边左边）
Sorry,I don't know.And you can ask other people.（对不起,我不知道.你可以去问问其他人）
I didn't see it.(我没有看见它）
楼主,有什么不懂,

裤裆里。

Tt's on the table.
I didn't see it.
I don't know.

-----,jack? it's4:45. oh,it'stimn---my birthday party. where is my dress? ------? it's blue and white. ---your dress? -------,thank you.