Much attention pronunciation if you want to speak English well . A. should pay toB. must

问题补充：

Much attention pronunciation if you want to speak English well .

A. should pay to

B. must be paid

C. should be paid to

D. will be taken of

答案：

A. should pay to

B. must be paid

(答案→)C. should be paid to

D. will be taken of

解析：对于从句的条件，should 有建议的意思，且 pay a visit to 是固定词组。