21. When I stayed in the countryside, I enjoyed ___ leisurely walk on the country road, and felt ___ warmth of the sun on my face.
A. /; the B. a; a C. /; a D. a; the
22. In it were photos of all the actors of our show, _____ signed by each performer.
A. frequently B. lonely C. personally D. actually
23. It’s easy to learn a country’s culture if one is ____ with its language and customs.
A. similar B. familiar C. sensitive D. flexible
