About _________ of the engineers in my company seem to be in their _________.

Did you scold him for his mistake?— Yes, but _____ it.

_______ interesting work it is to teach children!

Could you please tell me the meaning of this word—-I’m sorry I don’t know it ，either. Let’s ______in the dictionary.

Seen from space, the earth looks like a blue ball, with __________ 75% of its surface covered with water [ ]