for--with (communication with 固定搭配,“与...的交流)
popularer--popular (more+原级,构成比较级)
them--it (指Christmas Day,故用it)
much more--much (没有比较的意思,故不用more)
were worrying--are worrying (现在进行时)
people--people's (某人的注意,故用名词所有格)
have--to have (没必要做某事:there is no need to do sth.)
back--backs (此处应用复数形式)
the word--a word (in a word总之)
calmly--calm (stay为连系动词,意为"保持",故用形容词作表语)