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
网友回答
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。