[文法]是否少了are?

[systemdiy (system)]

Lily:By cutting corners,we're saving money in the short
     run but losing money in the long run.The reason I
     say this is that the lesat favorable comments (  )
     came from our regular customers.

上面是英語雜誌對話的其中一段,原文沒有掛號

請問在掛號的地方為什麼沒有are ?

謝謝

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推 Tenka: 沒少
→ MattCain: be+ving 怎麼會覺得有少?
→ priv: 沒有少，應該問為什麼你要加
推 gold97972000: 試者把第二句話的子句找出來(?)
→ lyu0001: came from 不需要加be
推 buzz1067: 想起來了，常常有的疑問
推 buzz1067: where are you from?
→ buzz1067: where do you come from?
→ buzz1067: 這樣想就覺得沒問題了
→ buzz1067: 多謝l大
→ systemdiy: 明白了,感謝各位!!!