【正确答案】
A
【答案解析】[解析] 题干大意:我们确定他会康复。画线词certain:肯定的。选项中sure:肯定,替换后句法上也是合适的。happy:高兴的,如:She is a very happy woman. 她是一个非常幸福的女人。surprised:惊奇的,如:You might be surprised to learn that trees generate small amounts of electricity. 你也许会对树木可以产生少量电流一事感到惊讶。excited:兴奋的,如:People tremble when they are cold, excited or full of fear. 人们在寒冷、激动或恐惧的时候,身体会发抖。