You will not win the first prize ________ you work harder.A. if B. unless C. or
You can get much ______ about the famous singer on the Internet.
Look at ______ girl with sunglasses. She is my cousin.
—What’s the weather like today?— . Good luck to you!
Eating _______ sweet food is not good for our health (健康).
I think ______ necessary ______ to take more exercise.