It was at the entrance ______ we stood chatting ______ the accident happened.
—What’s wrong with you yesterday?—When I was playing football, my strength ___________ and I fell down.
In our class there are 46 students, _____ half wear glasses.
---Thank you very much for helping me out of trouble, Bob. ----__________.
He is famous both _________a novelist and poet but he is more famous_________ his novels.
Niagara Fall is a great tourist ________, drawing millions of visitors every year.