John has put on so much weight recently that his mother has to ________ all his trousers to his measure.
A.let out
B.give away
C.bring in
D.make up
网友回答
A解析根据句意“John近来长胖了那么多以至于他的妈妈只好把他所有的裤子都放宽到他现在的尺寸”，选项中的四个词组只有let out表示“放宽衣服”，此外，let out还有“发出声音；放出（水、空气）”等意思，如：let out a cry of pain“发出痛苦的叫声”，give away“赠送”，bring in“引进；赚得”， make up“组成”，都不合题意．