We have two ears and one mouth so that we can listen ________we speak.

Did they takeany photos一______．

I think you should apologize to him— _____ I’d apologize to anybody but him

The viewers will have _____ second chance to watch Voiceof China on _____ Channel 4 tonight.

“子系中山狼，得志便猖狂。金闺花柳质，一载赴黄梁。”暗示了何人命运（ ）