I'm happy ________________ you are happy.A. if B. unless C. as long as
______, but he insisted that he _____ to school .
—Tom has won the 100-meter race. —__________! He never won it before.
A brilliant idea occurred to him, ______ to his research in the lab.
_____ it would be silly to argue any longer .
Did ______ on time make the teacher angry ?