Her key is on the desk.（改为复数句）
作者&投稿：辛逃 （若有异议请与网页底部的电邮联系）
thereisapenonthedesk改为复数句~
There are some pens on the desk.
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The leaf is on my desk.(把句子改成复数句)
The leaves are on our desks.
The leaf is on my desk.(把句子改成复数句)
The leaves are on our desks.
