Don’t be so discouraged. If you ______ such feelings, you will do better next time.
New medicines and instruments ______ every day to extend life.
A red sky in the morning ______ to be a sign of bad weather.
Hundreds of jobs _______ if the factory closes.
“Look! Everything here is under construction.” “What is the small building that ______for?”
He kept a little notebook, in which ______ the names and addresses of his friends.