---You bought the car ten years ago? ---Yes. ____ it’s old, it still runs well.
| A．Because | B．Since | C．Although | D．But |
Their teachers are very ______ to them.
A .difficult B. boring C. friendly
The book_____ be jim’s because his name is on it.
A. cant B. must C. can’t
Look, she _____a book over there.
A .is reading B .is looking C .is seeing
Why are you so happy?
----______my mother buys a new bike for me.
A. So B. Because C. But
Maria is in the _____ office.
A .teacher B .teachers’ C. teachers