You should understand the traffic rule by now. You’ve had it ________ often enough.

________ by the growing interest in nature，more and more people enjoy outdoor sports.

You’d better have your bike ________, or it’ll get you into trouble.

---When will the plane leave?
---It ________ very soon.

I know a little bit about Italy as my parents and I  there several years ago.

---Our family    to Taiwan Island this coming holiday.
---Have a great time!

---Ring me at six tomorrow morning, will you ?
---Why that early ? I _____then.

Our friendship _____ quickly over the weeks that followed.

—Have you heard about that fire in the market?
— Yes, fortunately no one _____.

By the time you have finished this book, your meal ______ cold.