It took him a long time to learn how to ………… . A. cross the streets safely B. take a bus C. greet the neighbors D. make friends at schoolĐoạn văn2/40It took him a long time to learn how to ………… . cross the streets safelytake a bus greet the neighborsmake friends at schoolGiải thíchHướng dẫn giải: Đáp án đúng: A