to be in charge while someone is away
誰かがいない間に責任を持つ (dareka ga inai aida ni sekinin o motsu)
"Can you hold the fort while I'm at the meeting?"
"会議中、私の代わりに任せてくれますか?" (kaigichu watashi no kawari ni makasete kuremasu ka)
being very careful not to upset someone
to go shopping for a long time until you are tired
unexpectedly or without warning
to look very happy and cheerful
to cause someone to feel sympathy or emotion
to go for a walk or leave; to go away