Why________ you always leave your dirty clothes in the bedroom?

—________ you open the window, please? —Yes, I can.

Susan’s parents have bought a large house with a swimming pool.It      be very expensive.

 ——Can I get out in the daytime?——No. The school rules state that no child _____ be allowed out during the day, unless accompanied by an adult.

-Must I use both hands?-Yes, you _____.