题目

在横线上填上“>”“<”或“=”。0.34-0.2590.43-0.2598.7-5.1910.2-5.1981.3-2.6431.8+28.9 8.35+7.297.29+8.35 答案：【1】<【2】<【3】>【4】=He ________ ill last week and stayed in bed _______ he was well. A．was; when         B．fell; until          C．was fallen; till      D．had been; before