It is easier to go down a hill than to climb up a hill, so it is to fall into bad habit than into good ones.
Bad habits do not come suddenly. They come little by little while people do not notice their danger. Some schoolboys first pick up bad habits in school and on the streets. When they cannot finish their lessons, they copy from their classmates. If they see bigger boys smoking, they also want to learn to smoke. When they are older, the habits become so strong that they can never get rid of them. From copying, they fall behind, then learn to steal, and smoking is bad for their health. At last they become worse and worse.
How necessary it is that we get rid of the bad habits at the very beginning.
Bad habits come _____________.

A．quickly

B．suddenly

C．quietly and slowly

D．easily

Some schoolboys first pick up little bad habits _____________ .

A．only in class

B．in schools and on the streets

C．when they were born

D．at home

“ get rid of “ here means ___________.

A．put on

B．ring up

C．pick up

D．give up

When they grow, bad habits will ____________ .

A．become too strong to get rid of	B．become smaller
C．run away	D．leave

Smoking is__________.

A．harmful only to young people	B．bad for their health
C．not bad for us	D．bad for their study