从词类活用的角度，选出与其他三项不同的一项（ ）

In “My purpose is to help you feel less stressed .” “to help youfeel less stressed” is used as .

English is a language that many youngpeople around the world notspeak perfectly but atleast understand

_ which way to take, the little boybehaved like a real gentleman who comforted his sister from time to time

79 There are only five minutes left before the train leaves You should run _______