When ______ from milk, the remainder is called skim milk. (A) all the butterfat is removed (B) removing all the butterfat that (C) is all the butterfat removed (D) the removal of all the butterfat 求助这道英语选择题并且为什么这么选?
...aten his breakfast, he left the house. 该句应该是分词的完成式作状语。然后语法书上说,若不用分词完成式,则需要添加after来明确eating和主句谓语的先后关系。可以写成:2、After eating his breakfast, he left the house.我的问题就是,加了after...