2: I've searched everywhere for it!
I've searched up and down for it!
I've searched high and low for it!
I've searched sideways for it!
3: Seeing the people suffering really made me reflect on their poverty!
The people's poverty was really brought home to me when I saw their suffering.
Their suffering made me see the poverty.
Seeing the people suffering brought over their poverty for me.
4: It's a very sensitive matter.
It's a painful matter.
It's a sore point.
It's an aching matter.
5: She's very excited!
She's over the hill!
She thrilled to pieces!
She's thrilled to bits!
6: He really wants to travel.
He's has itchy feet.
He can't stop moving.
He has no time to lose.
7: They stopped trying.
They gave up the plan.
They dropped out of the race.
They gave up the ghost.
8: He's feeling a bit depressed.
He's feeling a bit under the rain.
He's feeling a bit under the moon.
He's feeling a bit under the weather.
9: It was fortunate and extremely unusual.
It was a flash in the pan.
It was a spark in the fire.
It was a flash in the sky.
10: He decided to become very strict.
He put his hands up.
He jumped up and down.
He put his foot down.
11: She continued to insist that she was right.
She stood her ground.
She sat on the floor.
She flew off the handle.