to suddenly start crying
внезапно расплакаться (vnezapno rasplakatsya)
"She burst into tears after hearing the bad news."
"Она внезапно расплакалась, услышав плохие новости." (ana vnezapno rasplakalas uslyshav plohiye novosti)
a shy person who avoids social activities
To put in more effort than is expected
to act first and show leadership
to become very angry or emotional suddenly
to go for a walk or leave; to go away
completely controlled or dominated by someone