Tiếng Anh Lớp 12: Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions ( A ) What we know about these diseases ( B ) are still not sufficient to prevent them ( C ) from spreading easily ( D ) among the population A . What we know about B . are C . from spreading D . among, giúp em giải bài này ạ, em cảm ơn thầy cô và các bạn nhiều.
