He was __ twenty when he was gone.

Great inventors don’t ________ graduate from famous universities. Some didn’t even go to university.

There is no doubt that I'm trying to do what is best, but ________ I have got to consider the cost.

I don’t like the pattern of the trousers. ____ , the color doesn’t suit me.

Can you believe that in _____ a rich country there should be _____ many poor people?