Betty　　　eats junk food,so you see,she is pretty healthy. 

---______ do you go shopping, Mary? --- Twice a week.

 — I have great ________ in finishing the work by myself. Could you help me?— No problem.

 It was very late, but the teachers were ________ working hard in the office.

—______ have you lived in Binzhou?—For about ten years.