Although they feel tired, _________they still go on working.

Justin Bieber is ________ singer that young people are crazy for him.

________ the plane was missing for several days, ________ people didn’t give up.

— You look so tired.
— ________ I ran for two hours.

Don’t trouble trouble ________trouble troubles you.

----I don’t like chicken ____beef?
----I don’t like chicken, ______ I like beef very much.

---You bought the car ten years ago?     ---Yes. ______ it’s old, it still runs well.

-- May I go to the concert with you?
-- I’m afraid not ____ you have a ticket, because I have only one.

— Do you know everyone at the party?
— Almost, but I don’t know the one 　　　 you talked with at the door.

— Mom, I want some pocket money.
— Well, I won’t give it to you 　　　 you wash your clothes.