"You can't have this football back        you promise not to kick it at my cat again," the

     old man said firmly.

     A. because          B. since          C. when          D. until

“You can't have this football back ________you promise not to kick it at my cat again，”the old man said firmly.

A．because B．since　 C．when D．until

“You can't have this football back ________ you promise not to kick it at my cat again,”the old man said firmly.

1. A.
   because
2. B.
   since
3. C.
   when
4. D.
   until

"You can't have this football back             you promise not to kick it at my cat again," the old man said firmly.

A. because            B. since             C. when           D. until