we found _________ necessary to save wildlife .

we found _________ necessary to save wildlife . ( )we all found ____it necessary to take some exercise every we found it necessary to protect the earth 为什么用it 而不是it is We found it was necessary to write down her addresss.请用：find reenactment thereof save to the extent necessary to give eff What do you think we should do to protect wildlife? I found the article on wildlife interesting From now_____,we need to save water We will save money to help_________animals.(home) We're trying to save the manatees! i think (it) necessary to save energy in our daily life.不是it Last Saturday ,we had a class trip to Beijing Wildlife Park.