Laughter, along with an active sense of humor, ______ protect you against a heart attack, according to a recent study.
A．have helped
B．helped
C．help
D．helps
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
根据n多题专家分析，试题“Laughter, along with an active sense of humor, ______ protect you against a heart attack, according to a recent study.A．have helpedB．helpedC．helpD．helps…”主要考查了你对 【一般现在时】，【将来进行时】，【过去完成进行时】，【过去将来时的被动语态】 等知识点的理解和应用能力。关于这些知识点的“档案”，你可以点击相应的链接进行查看和学习。
◎ 相似题
与“Laughter, along with an active sense of humor, ______ protect you against a heart attack, according to a recent study.A．have helpedB．helpedC．helpD．helps”考查相似的试题有：
