—Can I help you sir?—Yes I bought this radio here yesterday but it.A. didn’t work　　　　B. wo

问题补充：

—Can I help you，sir?

—Yes，I bought this radio here yesterday，but it.

A. didn’t work

B. won’t work

C. can’t work

D. doesn’t work

答案：

A. didn’t work

B. won’t work

C. can’t work

(答案→)D. doesn’t work

解析：此处表示现在的情况，需用一般现在时，而won’t do表示某种倾向。