they became good friends during the war,and since then their lifelong friendship has__tests of life
问题描述：
they became good friends during the war,and since then their lifelong friendship has__tests of life
they became good friends during the war,and since then their lifelong friendship has__tests of life and death.
答
此处可填与通过、经历等意义相近的动词现在完成时的形式,
意为：从那以后他们的友谊通过了生与死的考验.
楼上的went through是过去时,应该改为相应的完成时形式gone through,