--- This is a really lively party. There’s a great atmosphere, isn’t there?--- ________ The hosts know how to host a party. (2013山东)
We are aware that,__________,the situation will get worse.
A man does not know the difficulty of anything __________ he does it personally.
You can borrow my car __________ you promise not to drive too fast.
__________ our manager objects to Tom's joining the club, we shall accept him as a member.
One's life has value __________ one brings value to the life of others.