语法与词汇58.I also remember that schoolboys would start to spit at the same age as they took to smoking on the sly, just to show what grown-ups and tough guys they were.
【正确答案】
C
【答案解析】这句话的意思是：我还记得，学校里的男孩子们在开始偷偷吸烟的年龄也开始随地吐痰，以显示他们已经是成人，已经成为粗悍的小伙子。画线短语on the sly意为“暗中地、偷偷摸摸地”；sneakily意为“鬼祟地、偷偷地”；hastily意为“匆忙地”；happily意为“幸福地”；openly意为“开放地”。根据题意，答案为C。