nt
第1个回答 2015-10-30
应该填写：walking
第2个回答 2015-10-30
l saw him _walking____(walk) out of the building at moment
see sb do sth,see sb doing sth
因为有at the moment 提示词，所以用walking本回答被网友采纳
see sb do sth,see sb doing sth
因为有at the moment 提示词，所以用walking本回答被网友采纳
