Proof reading x1

呢個係particple phase 的做法:
將2句句子合埋一個,1句保留動詞,另1句用particple phase代替相關的動詞

Currently there are about 70,000 factories in the delta area.
70,000 factories (are run) by HONG Kong business.

are run(被動式) 可變成 Being run (being + past particple) / run (past particple)

因此答案係 (run 或 being run) 而5係running

I have no idea...
because i so stupid i don't know why the answer is 3 until now = =

因為這裡用了passive voice(被動式)

被動式就是be + 過去分詞

句子前面你可看見are...

而run就是過去分詞

你可以將句子譯為中文...

Currently there are about 70,000 factories in the delta area run by Hong Kong businessmen.

現在有大約70000間工廠在三角州範圍被經營

這句句子的意思會合理...

所以答案會是3

ps.其實by可以解作(被),這字常用於被動式...

do u know grammer?
running is progessive tense

ask your teacher....coz grammer is my weakest part of english
sry..