I would just like to add that I've just finished doing one of those tasks (the YES and NO one) and after achieving a 100% accuracy, I've been rewarded 1 booster

it's not much but hey, it's for free after all. So basically, everyone whose English is rather acceptable should do just fine, it took me something around 10 to 15 minutes to go through the 10 needed steps in order to successfully finish the task. There, I hope this info may come in handy for the poorer ones in this game (like me

)
Cheers