- Excuse me. May I use your eraser, plea...

_____has your brother studied in New York? —For two years.

A. How old      B. How often    C. How long

Bob promises to join in the football match ______ he has to help his parents on the farm.

A. if         B. as                C. unless

-- Did you find the small village yesterday?

-- Yes, without any difficulty, for it has ______ changed over years.

A. hardly       B. greatly            C. clearly

I couldn't get through the door because there was a big box ______.

A. by the way        B. on the way      C. in the way

It's nice of you to ______ so much time showing me around your school.

A. take       B. spend              C. cost