Students in Dingli Senior High School are walking along the street a small red flag.A. t

问题补充：

Students in Dingli Senior High School are walking along the street, a small red flag.

A. they each hold

B. each holds

C. each of them holds

D. each holding

答案：

A. they each hold

B. each holds

C. each of them holds

(答案→)D. each holding

解析：考查独立主格结构。如果选择ABC都需要加连词and;因为两个句子之间必须要有连词连接。答案为D，这是一个独立主格结构，它是一个短语，相当于一个句子。本题中each holding a small red flag=and each holds=and each of them hold=and they each hold.