问题补充：
56. Manatees eat about 100 pounds英磅a day.【小题1】pounds
57. Waiting等for her made me angry.【小题2】 Waiting
58. Last Sunday, two kids visited拜访me.【小题3】 visited
59. I’m more outgoing外向的than my sister.【小题4】 outgoing
60. He didn’t know what was happening发生outside.【小题5】 happening
答案：
解析： 略
