II.选择填空 (15%,每小题1分)
( ) 16. ---Your bag looks very beautiful. Where did you buy __________?
---In America. Do you want to buy __________ like this?
A. it, it B. one, one C. it, one D. one, it
( ) 17. ---I found ________ necessary for us to learn English well.
---That’s ________ so many people want to improve their English.
A. it, when B. it, why C. that, because D. this, why