In a sport team each player has a clear role, and there are few occasions ______ members are confused or uncertain of their roles.

I have reached a point in my life ______ I am supposed to make decisions of my own.

Can you make sure ______?

The newly built café, the walls of_______ are painted light green, is really a peaceful place for us, specially after hard work.

It was the truth that the black reached a stage_______ they had almost no rights at all in the past.   

Is this the reason _____at the meeting for his carelessness in his work?

The factory produces half a million pairs of shoes every year,80%________ are sold abroad.   

In English class, our teacher often creates an environment _____ we are given the opportunity to solve problems ourselves.

Not far from the school there was a garden, _____ owner sat in it playing chess with his grandson every afternoon.