Answer:
Ms.Chang could tell the boys that they might observe that their height is growing less at first but then it will increase to grow at a constant speed, the growth of ADAMS APPLE will also be observed and the boys might have shrill voice for a few days, there will also be the growth of hair in armpits and pubic regions. All that u should do is the experience and don't worry coz these all are the part of our growing stage.
hope it helps
have a nice day
