_________you’ve known the importance of it, you should try your best to do it.

His promise ___ he would marry her when he came back turned out to be a lie, ___ left the girl heart-broken．

Before long the Greens moved to a bigger city ____ the children could attend a better high school.

The so-called Asia—Pacific century will make no sense_____ China develops．

________our manager objects to Tom's joining the club，we shall accept him as a member.