Dears~ 我想問一下以下題目 This is the Association's most popular event, so ____early yo assure ur place. (a)will register (b)must register (c) registering (d)register why the correct answer is d not c.(這不是分詞構句ㄇ) Pls help and thank u.

We need a verb in base form. ’So’ is the same in meaning as ’because’ Because is used with the reason (子句) 理由連接詞 So is used as 目的連接詞 if we change ’so’ to ’because’, ’Because this is the Association’s most popular event’ then you would use register and not registering eg: Because this is the Association’s most popular event, register early to assure your place.