21．New iPhone goes on sale on Friday with bigger screen and 4G wireless technology, as company seeks to keep its competitiveness.
A．a; a B．a; the C．the; the D．the ;a
22．—I’m nervous for I’ll take a maths test.
— . Your hard work will pay off.
A．Life is not easy B．Nothing is possible
C．It doesn’t matter D．Believe in yourself
