b.
used about a particular period of time, beginning on 1 January and ending on 31 December, or between the first and last dates on some other calendar 年,年份(用于指从1月1日开始至12月31日结束或在其他日历上的第一天和最后一天之间的一段时间) We're hoping to have the house sold by the end of the year. 我们希望能在年底前把房子卖出去。
They're showing two films from the year 1977. 他们在放映1977年以来的两部影片。
last/next year (=the year before or after the present year) 去年/明年 : Profits are lower than last year. 利润比去年低。
Synonyms and related words