推 zebracoco: than people ( in many parts of the world ) lived in 07/19 17:58
→ zebracoco: the past . lived 和前面動詞一樣，所以用did 代替 07/19 17:58
People in many parts of the world are living longer lives now than people ____ in the past.
a) did
b) were
c) lived
d) had been
答案是a
想請教題目裡，than之前的部分，動詞是？ are living? lives?
承上題，如果動詞是 are living，did和were怎麼選？
謝謝
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