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.