单选题
John ______ from social activity because he felt embarrassed with people.
A、
held on
B、
held back
C、
held off
D、
held out
【正确答案】
B
【答案解析】
[解析] hold back意思是“克制,不做某事”;hold on意为“坚持,继续”;hold out意为“伸出”;hold off意为“阻挡,拖延”。
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