社会保障卡是记录个人社会保障的信息卡。很多地方政府将社会保险费的缴纳与返还、医疗保险费的缴纳与支付等事务,委托银行代理,并加载到社会保障卡上。社会保障卡加载资金往来功能后
Whenever I go to Beijing, ____ is quite frequent, I will go to visit the Great Wall.
The two boys fought and fought until one ______.
He will _____ our class to sing at the school singing contest.
John _____ knowledge of radio just by staying around the radio station.
It isn't so much whether he works hard; the question is whether he works _____.