Susan ,you are doing worse. You have to _____more _____ your study than computer games.—Yes. I must control myself.

Bob can play tennis but he can’t playpiano.

You may go fishing if your work _______.

We’ll be back for our school’s ____anniversary ceremony(周年校庆).—I see. That means you’ll have a get-together with your classmates in_______ years.

I find ________ difficult to remember everything, though I’m still young.