. Enough attention should be paid to your pronunciation and intonation.A. improveB. impro

问题补充：

. Enough attention should be paid to your pronunciation and intonation.

A. improve

B. improving

C. improved

D. be improve

答案：

A. improve

(答案→)B. improving

C. improved

D. be improve

解析：考查非谓语动词。句中pay attention to关注，to为介词，故用v-ing形式。句意：应当足够的关注你的发音和语调。