The medicine is supposed to cure this disease but I’m not sure it.A. doesB. wasC. hasD. i

问题补充：

The medicine is supposed to cure this disease, but I’m not sure it.

A. does

B. was

C. has

D. is

答案：

(答案→)A. does

B. was

C. has

D. is

解析：可联系答案网客服索取此答案。