Our teacher is clever, but not good at __________ his ideas to us.

It was Martin Luther King’s struggle ______ helped black Americans to get equal rights.[ ]

What about going out this evening? —Oh,I don’t know I’ve got a bit of headache,and,John’s coming to see me,so I ought to stay in[ ]

We want someone to design the new art museum for us?—the young fellow have a try?

So, it was a win-win situation _______was why we did not hesitate _______ with them.