21. —Excuse me. How much is the shirt?
— _______.
A. Extra Large B. 50 each
C. It sells well D. Altogether there are 5
22. New technologies have made ________ possible to turn out new products faster and at a lower cost.
A. that B. this C. one D. it
23. —Goodbye, John. Come back again sometime.
—Sure. _______.
A. I did B. I do C. I shall D. I will
