—So many problems! I’m tired.—You should try to        them by yourself. You are not a child any longer.

---Why did you refuse to join them in the show? ---Because I don’t think the show is worth ________ part in.

—Dinner is ready. Help yourself! —Wow! It ________ delicious. Could you please tell me how to cook it?

How long have you __________ this book?

The weather is fine. The students are having a good time _______basketball.