—Where can I get this medicine?—At chemist’s. It’s on sale everywhere.A. anyB. eachC. som

问题补充：

—Where can I get this medicine?

—At chemist’s. It’s on sale everywhere.

A. any

B. each

C. some

D. certain

答案：

(答案→)A. any

B. each

C. some

D. certain

解析：从后面一句“到处都有卖的” 可知用any，表示“任何一家药店”。