Yesterday,asIapproachedthefrontdoorofourpubliclibrary,a...
问题详情：Yesterday,asIapproachedthefrontdoorofourpubliclibrary,awhitehairedgentlemansteppedbacktoholdthedoorforme. Yousee,Ihavetogoeverywherethesedayswithawalker,andfolksareconstantlyholdingoropeningd...