bigger - the biggest, funnier - the funniest, more comfortable - the most comfortable, better - the best, stronger - the strongest, worse - the worst, more expensive - the most expensive
1 travels, 2 costs, 3 were, 4. will
I shall buy a present tomorrow. Shall I buy a present tomorrow? I shan't buy a present tomorrow.
We shall go to the cinema after classes. Shall we go to the cinema after classes? We shan't go to the cinema after classes.
Will she read tomorrow? Who will read tomorrow? What will she do tomorrow? When will she read?