Peter, you look so tired and wet all over!—Yes, all afternoon I ________ football on the playground

We’ll reach the sales targets in a month _______ we set at the beginning of the year.

past few years, research hassuggested that Vitamin D may increase the level of serotonin, one of the keynurotransmitters influencing our mood, and ________it helps to relieve mooddisorders.

I wish I ____ clever enough to workout the ____ geometry problem.

Each player tried his best to _________ the game.