There has been accidents on this part of road.A. a number ofB. the number of C. a series o

问题补充：

There has been accidents on this part of road.

A. a number of

B. the number of

C. a series of

D. plenty of

答案：

(答案→)A. a number of

B. the number of

C. a series of

D. plenty of

解析：考查固定搭配。A number of许多，大量；用来修饰可数名词复数形式。the number of…的数量；a series of…一系列的…；plenty of 许多，大量；句意：在路上的那个部分，有很多的事故发生了。故A正确。