CF U2 revision (word building)

the state or condition of not being strong

helpful for doing or achieving something

embarrassed because of something stupid that you have done

somebody who does not think about what they are doing, so they make mistakes, hurt people, or damage things

trying hard not to cause harm or damage

behaving in a silly and annoying way (like a kid, not adult)

a relationship between people who like each other and can trust each other

very valuable and impossible to replace

you feel it when you don’t want to work or make any effort

comments that show that you think something is wrong or bad

something that has no purpose or cannot do what it was designed to do

giving you a benefit or advantage