Mr. Flowers stayed ior near by his glass-houses______.
· at times wheschool-boys were walking near them
· all the school day whethere were no boys about
· where he could not be seeby the boys passing
· ihis free time at the beginning and end of the school day

答案

单选题
·win a silver cup for growing a rose of a new color
· in his free time at the beginning and end of the school day

Mr. Flowers stayed ior near by his glass-houses______.· at times wheschool-boys were walking near them· all the school day whethere were no boys about· where he could not be seeby the boys passing· ihis free time at the beginning and end of the school day