TTGWD26-20好心人看看

Q20

In 1981 children in the United States spent an average

of slightly less than two and a half hours a week doing

household chores; by 1997 they had spent nearly six

hours a week.

A.     chores; by 1997 they had spent nearly six hours

a week

B.     chores; by 1997 that figure had grown to nearly

six hours a week

C.     chores, whereas nearly six hours a week were

spent in 1997

D.     chores, compared with a figure of nearly six hours

a week in 1997

E.      chores, that figure growing to nearly six hours a

week in 1997

答案B,为什么A 不行

楼上正解，前面我想说些什么，就是无法表达……

B.     chores; by 1997 that figure had grown to nearly six hours a week.
    

重點在by這個介詞, "到1997為止", 這個數字已經接近 six hours a week.

为什么没有人选D?

我觉得d也可以呀

对啊  我也选D

...

D不好

句末的过去分词短语一般修饰前一个名词，所以这样的表述在这里不合理