—You should be careful when _______.
—Yes, I will. I’d like to know when ________ to have a rest.
—Are you _______ to go hiking with us?
— Yes, I _______.
—How do you like the film Titanic?
—I must say it’s _______ film I _______.
---There’s _________ ball on the ground.Would you please pass _________ ball to me?
---With pleasure.
---I’m sorry I went out for a smoke.I was very tired.
---There’s no ______ for this while you are at work.
----Let’s go home now.
---- ____.
—What does your grandfather like doing?
—__________ magazines.
---Would you like _____bread?
---No, I don’t want to eat _____.
---I wonder ________ like to be an astronaut(宇航员).
---I don’t know, but I imagine it’s exciting.
---Are you going to go shopping this afternoon?
---No,I'm _____ tired _____go.