[文法] 三題文法請益

[yoonhrt20 (sone寶)]

1.James has three sisters,all of _____ are married.
a.who  b.whom  c.them  d.which

2.That famous researcher died all of a sudden,_____ the project unfinished.
a.leaving  b.left  c.leave  d.and leaves

3.A backpacking subculture _____ in Kathmandu,Goa,and Bangkok since it became part of the "hippie" routes in the 1960s.
a.exist  b.existed  c.has existed  d.had existed

以上三題請個位高手幫解，我選的答案分別是cdd，在請個位幫我過目一下，謝謝!!!

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推 naushtogo: bac
→ naushtogo: 1. 沒有連接詞，them -> whom
→ naushtogo: 2. 人已死只能用過去式，沒連接詞只能用分詞
→ naushtogo: 從1960s，此次文化依然存在著，用現在完成
→ flor: dac
推 NCUking: naushtogo正解
→ yoonhrt20: 謝個位大大已了解
推 shyhshiun: BAC