He was unlucky because he failed the exam.

On ______ sides of the streets are a lot of colorful flowers.

What’s your plan for the summer holidays?-I’ve no idea, but I’ ve decided _____ at home and have a good rest first.

You are under 18 years old, so it is for you to join the Trailwalker.

Excuse me. May I sit here?—I’m afraid you _________. My daughter will come back soon.