--- ____ you _____ of the pop singer called Justin Bieber?--- Yes, I have. His voice sounds_____.
--I don’t know if his uncle ________. --- I think he ________ if it doesn’t rain .
It was not very warm ______ the sun came out.
The students hurried to the classroom ________ the bell rang.
She got up early this morning _________ she could catch the first bus.
—What about this pink skirt, madam? —This one is really beautiful. I will buy it ________it's a little expensive.