A - It’s as easy as ABC.
Very easy
B - It went from Bad to worse.
The situation became even worse.
C - It was a piece of Cake.
Very simple to do.
D - on the Dot.
Exactly on time.
E - what on Earth …?
Used to show surprise or shock.
F - you’ve really put your Foot in it.
You made a mistake / said something embarrassing.
G - It’s anybody’s Guess.
Nobody knows for sure.
H - on the one Hand … on the other Hand …
Comparing two sides of an argument.
I - I haven’t got the faintest Idea!
I don’t know at all.
J - It’s a good Job that …
It’s lucky that …
K - I was on a Knife-edge.
I was in a very tense or dangerous situation.
L - Last but not Least …
The final point, but still important.
M - I was over the Moon.
I was extremely happy.
N - It gets on your Nerves.
It annoys you.
O - every so Often …
Occasionally.
P - he was a Pain in the neck.
He was very annoying.
