问题
选择题
. Enough attention should be paid to _____ your pronunciation and intonation.
A．improve
B．improving
C．improved
D．be improve
答案
答案：B
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。
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