—Your sister’s plan is not quite practical.Why not try to persuade her to give it up?—My sister is very stubborn,so it is________to try to change her mind.
The school offers many _____ activities for the local students.
It is ______ that the noise around us is a(n) _______ to our health and well being.
We can broaden our horizons through _________ to new things.
Jack’s house has been broken into twice and now he takes________ against theft at any time.
The environmental organization calls on customers not to purchase these _______ packages of food, clothes and gifts.