what are they doing?they are reading.
they 造句，一问一答
what are they doing?
they are reading.2014-10-21
are they any book?
yes,they are some books.2014-10-21
Are they students?
Yes,they are.2014-10-21
do they come from china yes.theydo2014-10-21
i like youtitle,icu？2018-12-22
