选词填空take the place of,in memory of,feel proud of,break down,to one's delight

选词填空take the place of,in memory of,feel proud of,break down,to one's delight
attempts must be made to___the barriers of fear and hostility which divide the two communities.
they will build a monument___the national.
___,i met jing yidan ang li yong at the airport.
sending e-mails has almost___writing letters in modern society.
he___himself for not giving up.