单选题 (At) weekends I enjoyed (to stay) alone, (reading works) by famous writers (such as) Mark Twain and Charles Dickens.
【正确答案】 B
【答案解析】[解析] 本题考查动词搭配。enjoy后面一般加上名词或名词性的成分,如果有动词,需要用动词的ing形式。因此选B,改成staying。