21. —They are said to be quarreling about our new language lab.
—I don’t care. It has ________ to do with me.
A. nothing B. something C. anything D. everything
22. Next year we will not have to learn all the nine subjects. We can choose five of them ________ our interest and speciality.
A. are based on B. are basing on C. based on D. basing on
