When I was walking past his room yesterday evening, I heard him ________ piano.

If my sister goes to watch the singing competition named “I am a singer” next time, _______. The competition is well organized.— _______.

In some places women are expected to earn money _______ men work at home and raise their children.

His opinion was such a good one _________ his family all agreed to accept．

_________ advertisements are of great help, I don’t think we should entirely rely on them