有人把一块布盖在它头上,把它固定住,直到我们用绳子把它捉住。
考点:throw a cloth over its head把一块布盖在它头上;secure it with a rope用一根绳子捉住它。
句子结构:主句为One of the men threw a cloth over its head and secured it,till引导时间状语从句。