---How do you like China?

---________!

---Hi, Andrew. How can you improve your English so much?

---Oh, nothing difficult. The ________ you work at it, the ________ progress you will make.

---Is your kite broken?

---No. It's ________.

---Did you ________ that Amy's been a little too quiet these days?

---Yes．She didn't even say a word this morning．

---Many teenagers are made ________ what they’re not ________.

---I agree.

---You forgot ________ the door.

---Oh, ________. I’ll go and close it.

---What do you often do in your free time, Tom?

---I often go surfing with my friends．I think surfing is ________ exciting sport．