21．Mr．White, who comes from ____ European country, has formed _____habit of attending ____ church on Sundays．
A．an; /; the B．a; a; a C．an; the; / D．a; the; /
22．——I can’t _______ another task, now I have more than I can do．
—— In this way, I will ask someone else．
A．take on B．take over C．take up D．take off
