—__________ do I have to change the robot’s batteries? —Every two months.

---Jack, _______ have you been away from your hometown?
---Since the end of last February.

—_____schoolbag is that?
—You mean the one behind the chair? It’s Tonny’s.

—_____ will you play basketball with me?
—In about 20 minutes after finishing my homework.

—_______is your home from our school?
—It’s about ten minutes’ walk.
A. How long B. How soon    C. How far

—        is Shenyang?
— It’s in the northeast of China.

— ________ did you last see him?
— Two weeks ago.

--- ______ helped the poor cat find its home?
--- My best friend, Mary.

---- _____have you been away from your hometown, Janet?
---- Since 5 years ago.

----    does the baby mouse weigh?
----About 20grams.