1 vài dấu hiệu thường gặp của câu phức: although, though, as, as if, as long as, as soon as, because, since, even if, even though, whether, if, in case, once in oder to, so as to, so that, so, that, unless, until, when, while, whenever, before, after, where, whever,...
P/S: đã thi chưa, chưa thi thì chúc bn thi tốt nha :))
