They are allowed ________ there to watch the game.

Many young people don’t work hard, and regret it later when the opportunity is gone.They only realize it________it is too late

Mum is coming. What presentfor your birthday?

They have _______ a few newspapers to keep themselves informed of the hot issues of the changing time.

Having never met with such a _____ problem,he felt _____ and didn’t know how to solve it.