– Why are you going to do exercise? -Because it is a good way to _______ and make me relax.A. keep fitB. keep cleanC. keep excited
They think wolves are dangerous _________humans so this leads _______the danger of wolves.
Wolves often work __________a team and they never kill for __________.
We should tell hunters _______tigers.
Yesterday I talked to Amy on the phone and she ______ happy.
Can you tell us how important wildlife ___ is?