Her hair became gray ____ the passing of the years
________ we go there by train or by ship makes no difference. The time and the fees are the same.
Everybody likes to work with ________ is reliable and easy to get on with.
It remains unknown ________ the peace talk between the two countries is going to lead.
—What's your uncle's opinion about your decision?—He always encourages me to do ________ I think I should.
It is ________ the pupils do in their spare time ________ really prepares them to take their place in society as citizens when they grow up.