. --- What else do you want to know about the cell phone? --- _______ it can be used as a digital camera. You know, I’m into photography.

Someone called me up in the middle of the night, but he hung up ______ I could answer the phone.

（2014山东省实验中学高三第二次模拟考试）4．Your dreams can be achieved ____________ you have a goal and go for it with perseverance．

We won’t keep winning games ________ we keep playing well.

Tom, clean up the broken glass _________ someone walks on it.