▲ keep your head above water
I’m not sure how much longer we’ll be able to keep our heads above water.
▲ throw in the towel
We're not going to throw in the towel just because we lost one game.
▲ keep your eye on the ball
To do well in this office, you'll have to keep your eye on the ball.
▲ neck and neck
The two rivals are neck and neck in the polls.
▲ A ballpark figure
I can give you a ballpark figure.
▲ bowl over
I went to see his latest exhibition, it really bowled me over.
▲ be a front runner
He is one of the front runners in the presidential election.
▲ To give it your best shot
Whether you pass or fail in the test at least you know you gave it your best shot.
▲ To (make a) pitch for something
He pitched the idea at us, but we turned him down.
▲ To play it safe
You'll never be truly successful if you always play it safe.