单选题 Shy people never ______ set out to attract attention of other people.

【正确答案】 B
【答案解析】[解析] 本题中,B项“voluntarily自发地”符合题意。如:He made the promise quite voluntarily,(他自己答应的。)其他三项“willingly自愿地,欣然地;decidedly果断地;deliberately故意地”都不正确。