She undertook the custody and care of the child.

This new software has backward compatibility, so you can use old version data without any problems.

He was thinking of a catchphrase to come up with something he wanted to say.

They were having fun chatting at the party.

I stayed at home to watch over my sick grandmother.

She is in charge of watching over the patients at the hospital.

I had a good time having fun talking with my friends.

He is studying Chinese.

She is nursing her sick grandmother.

She has a keen sense of language, and can quickly grasp the nuances of words.