Question

Throughoutare this below sentences correct?how do I ask the

Answer 1

英语语法上,你那四句都是错的,没有1990year和2000year这种说法

有的是the year of 1990,the year 2000

the sale is stable from （the whole of）1990 through to （the whole of）2000

the sale is stable throughout the 1990 to 2000 period