--What is a satellite(卫星)?
--It moves around the ________.
--I haven't got a letter from my brother.
--________.
--Some spacecrafts have gone ________ the solar system.
--But Man hasn't.
— ________ are you?
—I'm twelve.
— ________ is your English teacher?
—Miss Gao is.
-Would you like to go to the concert with me?
-I'd love to, ________ I can't I have a lot of homework to do.
—You’ve never seen such a wonderful film before,_______?
—No,I haven’t.
—You must be surprised and excited to see the film star here.
—You’re right.________________.