单项选择题
A．Mr. Johns wasn’t at home B．the cows fed themselves C．Mr. Johns had feed the cows in the morning D．they find it difficult to feed cows
A．a Frenchman B．a photographer C．a kind of camera D．a kind of picture
A．the number of the expulsions is not large. B．the number of the expulsion is wrong. C．there are soldiers hiding among the students. D．guns are out of control in the US schools.