Bill won’t make any progress ______ he studies harder than before . 

You will be late for school________ you don’t get up early.

 --- Look, what a heavy rain! What shall we do now? --- ____________ it’s raining hard, let’s stay at home to surf on the Internet.

My friend Max started to play football ______ he was seven years old.

 — Linda, shall we go and watch the Flower Festival Party in April?—             we have the tickets.