选出下列单词中不同类的一项。
（1）A. cinema B. hospital C. scientist
（2）A. ship B. subway C. foot
（3）A. happy B. sorry C. worried
（4）A. science B. fisherman C. coach
（5）A. studies B. always C. Goes
Sarah goes to school ________ foot，but her brother goes to school ________ bike.
A.by；byB.on；onC.on；by
How ________ Mike go to school?
A.doB.doesC.is
－________ you go to school on foot?
－Yes，I do.
A.IsB.Am C.Do
Usually I go to school by bus，________ it’s fast.
A. andB. soC. because
My home is ________. Usually I go to school on foot.
A.farB.nearC.fast