Dad, must I finish my homework today?——No, you . You may do it tomorrow.

I called you yesterday evening, but nobody answered the phone. –Oh, I ___ a walk with my parents at that time.

It is a common practice in the USA that one needs to make a(n) ___ before seeing a doctor.

The manager has to get all these washing machines______.

Do you know ______ girl in green? She is our monitor.