—Areyouavolunteernow?　　—No,butI_____.IworkedfortheCitySportsMeetinglastyear.　　A、usedto　　B、usedtobe　　C、usedtodo　　D、wasusedto　　isapityyoudidn'tattendthelecturelastnight.Itwaswonderful.　　A、What;that　　B、It;that　　C、What;why　　D、It;why　　It'sreallytoknowthatthere'reonlysevenbonesingiraffes'longnecks.　　A、amazingly　　B、amazed　　C、amazing　　D、amazement