to write
这里的invitation是邀请函,写邀请函就是write invitation
have sth to do 是固定的词组,有.要去做
如不明白请追问!
欢迎私信或hi求助!��write on��ʲô��������أ�лл��Hold on please.I need a piece of paper to write on.I need to write something on a piece of paper .���������������лл��