His days are long, 12 hours crisscrossing ( 贯穿 )the city and ferrying local residents to buy groceries, get medicine and go to the hospital. And the roads he travels are __1____(most) empty since the city was sealed off. In his blue and white car, Zhang Lei is a rare sight on the streets of Wuhan. During normal times, Mr. Zhang, 32, is __2_____ taxi driver in this Chinese city at the epicenter( 中心 ) of the outbreak. But after the local government suddenly__3____ down( 封锁 ) the city late last month, Mr. Zhang became one of the thousands of people __4____ have volunteered to help ease the transportation woes( 困难 ). Most of ___5_____ passengers are poor, elderly residents who don’t have children or whose family is outside Wuhan and can’t come home because ___6___ the quarantine. “It’s____7______ (heartbreak),” he says. “There is no one to take care of them.” The free ___8___(ride)are arranged by neighborhood committees, which typically serve as a go-between for residents and the local government. Like other drivers, Mr. Zhang doesn’t get__9__ (pay). Many Chinese have praised these volunteer drivers for___10___(donate) their time and energy to help out their fellow residents.