he always spending his time and energy on something that was
he always spending his time and energy on something that was going to prove ----a dead end
A.to be B to have been
更纠结了 讲下理由呗
A.to be B to have been
更纠结了 讲下理由呗
赞 buvvokorea 幼苗
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B 如果前面是is going to prove 就选A 但前面是was 是过去式 后面就用 to have been.
1年前
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