John read an article ______ a competition.[ ]

What do you think of my shirt? It _______ cotton.—I looks nice on you.[ ]

What’s wrong with Sally？ —She was ill. She ______in the rain yesterday.

Lao She is _______ a great writer.

Don’t ________. Keep working hard and you will win the match. — Thank you, Mr. Zhang. We’ll try our best.