please explain clearly :
You must make as few changes to each line as possible, and not change the meaning or anything that is already correct! Punctuation counts! Only the most obvious corrections will be accepted!
1 It is no doubt that climate change is one of the biggest challenges facing the world today.
2 Immature teenagers like little children: they want a lot of attention from adults.
3 Let us list out all the options that we have.
4 The questions raised by our opponents worths thinking about.
5 Many parents want their children to enter that school, it is because the teachers are dedicated.
6 The group discussed about the outcomes of the experiment.
7 Macau’s economy growth depends on the success of the new casinos.
8 This restaurant offers excellent service, no matter they are busy or not.
9 Even your schedule is tight, you ought to find time for exercise.
10 For me, I think space exploration is a waste of time.