英文關鍵字
door
knock
knocking
knocks
nocks
nocking
hand
hits
hit
tap
taps
caller
calls
post
postman
courier
delivery
fedex
ups
amazon
packet
package
visitor
guest
arrives
arrive
arrival
visits
visit
family
salesman
selling
subscription
newspaper
newsletter
leaflet
political
voting
volunteer
person
urgent
angry
america