Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meanin...Đoạn văn26/40It is advisable for you to warn the children not to speak to strangers.The children may be warned not to speak to strangers.The children should be warned not to speak to strangers.The children must be warned not to speak to strangers.The children can be warned not to speak to strangers.Giải thíchB