The leaders have done everything they can _____ people's liv

The leaders have done everything they can _____ people's liv they have done everything they can ___the man's life Have they done what they can _____(stop) the environment pol what they have done __useful to the people The English signs have become very important in people's liv The doctor has done everything he can _____ (save)the patien People can say everything they like 英语学霸进来we have done everything we can yo simply the procedure [ ] have they done [ ] the spy Teenagers have done everything they can____ think of to deal They have done what they can (.) us stop the sangstorm.补空 如何理解:They have done more than they can do for the party.