Match the idioms with the phrases explaining them . there is one explanation you don't need. 1)a fat cat 2)while the cat is away the mice will play 3)like a cat on hot bricks. 4)to let the cat out of the bag. 5)like cat and dog. a)fighting badly b)to tell people a secret c)in a nervous or excited way d)when their boss is away people often behave badly e)very pleased about something f)lost your tongue