There is still a lot for Chinese Women’s volleyball team to improve _____ they have obtained a string of wins.

Colin was about to get off the camel ________ a child ran towards him.

_______ late you are, we will wait for you to come to have dinner.

You should not go rafting ________ you know how to swim.

 —How was that? —I was chatting on line ______ the power went out.