he is said to have been in the french foreign legion => people say

he is said to have been in the french foreign legion

→  People say he was in the French foreign legion

Giải thích : Cấu trúc câu bị động đặc biệt 

S + V1 + that + S2 + V2 --> S2 + was/were + V1-pII + to + V2 (nguyên thể)

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