A quarrel _________, which made him ______ his family.
. Living in the western part of the country has its problems, ________ obtaining fresh water is not the least.
. These students will graduate from the university next summer, ________ they will have studied here for four years.
. Many new means of transportation have been developed in our century, ________ perhaps the hovercraft.
. In , the take-home food sold by supermarkets made up per cent of the total, while _____supplied by fast restaurants was per cent.
. He made another wonderful discovery, ________ of great importance to science.