see 可以用作及物动词，表示“见证(事件)”

题目：

The 1990s ______ (see) a major expansion of the university accommodation for teaching and research.

(用动词 see 的适当形式填空) 

see 可以用作及物动词表示 witness (event), ”见证过(事件)“、”见证了(事件)“的意思时，做这种用法时，它的主语可以是时间、地点以及其它”非人“的事物。特别要注意的是，当 see 表示”见证过(事件)“时，它是不可以有进行态(continuous aspect)的。因为它是从 see 的基本意义”看见“引申出来的涵义。see 用来表示”看见“时是不可以用进行态的。

例如：

1. Last year saw highest number of Afghan civilian deaths.
2. Vinyl and cassette sales saw double digit growth last year.
3. Albums sold on vinyl and cassette both saw double digit sales growth in the US last year.
4. This stadium has seen many thrilling football games.
5. Last month saw dramatic rise in pork price.

所以，上面的语法填空正确答案应该是：

The 1990s saw a major expansion of the university accommodation for teaching and research.