A large number of students planting trees now, the number of the students 2000.
A. is, is
B. are, is
C. is, are
D. are, are
网友回答
A. is, is
(答案→)B. are, is
C. is, are
D. are, are
解析：考察主谓一致。句意：许多学生正在植树。这些学生的数目是2000.结合语境可知前文a number of表示许多人，主语是复数，故系动词用are。下文the number of……的数目，主语是抽象名词，不可数，故系动词用is。选B。