【Are】【your】【pens】 in your pencil box?
无疑后请采纳.
书山有路勤为径,学海无涯苦作舟.
-----------与君共勉-----------i know her phone number.（改为否定句）I ＿　＿　her　phone　numbrer．I 【don't】【know】　her　phone　numbrer．my jacket is on the bed .(改为否定句）my jacket _ _ on the bed .my jacket 【is】【not】 on the bed