--______ did you stay in the Marco Polo Hotel?

   --About one week. We enjoyed our stay there.

A. How many     B. How much     C. How often     D. How long

—Well, you've come back! ________ did you stay in Shanghai? 

— For about seven days. I really enjoyed myself.

A. How many      B. How far           C. How long           D. How often

梍_________ did you stay in hospital after the fire?

　　桾wo weeks.

　　A.How often　　B.How long　　C.How old D.How far

“________ did you stay in Beijing?”“Four weeks.”