A sheep_____on this kind of grass usually grows much faster than_____on ordinary grass.为什么用fed 而不用feeding A fed;oneB feeds;the oneC fed;thatD feeding;it为什么选A我们老师给的答案是A……为什么是fed

A sheep_____on this kind of grass usually grows much faster than_____on ordinary grass.为什么用fed 而不用feeding A fed;oneB feeds;the oneC fed;thatD feeding;it为什么选A我们老师给的答案是A……为什么是fed This is a love this is a japan This is a this is a This is a book this is a Demo This is a secret what a( )this pencil? If this was a This is a story This is a This is a n_____jacket is this a jacket This is a cirde. This is a this is a hat This is a snowmans