问题
选择题
____ students are practicing ___ English with each other at the English corner.
A．The number of; to speak
B．A great deal of; spoken
C．A great many of; speak
D．A number of; speaking
答案
答案：D
考查数词及动词用法。The number of……的数目，谓语动词用单数；A great deal of;许多，或接不可数名词；A great many of许多；A number of; practice doing练习做某事，故选D。