如题所述
第1个回答 2013-10-18
So it's very important to keep a good emotion.
第2个回答 2013-10-18
So maintaining a good mood is very important.
第3个回答 2013-10-18
It is impotant to keep a nice mood .
第4个回答 2013-10-18
so, to keep a good mood is very important
第5个回答 2013-10-18
It's very important to keep good mood.
