I would accept either A or B.
Student or Learner
Last year's holiday sales strategy.........to be such a success that we have decided to repeat it this year.
B) was proven
Welcome to the forum, tranviet.
You're lucky this time: we don't usually give out free answers to students' homework questions.
Thank MikeNewYork !! ...however.... could you explain clearly ? this is a questtion in target toeic! The answer is A but i dont now why ! help me please......
I am not a teacher.
A) is the right answer because 'proved' is the word that we would use - in BrE at least - to mean 'was found to be' which is clearly the intended meaning.
The verb 'prove' does have two past participles proved and proven, and they are often interchangeable, but proven simply wouldn't be the natural choice here.
If you were to use 'was proven to be' it would have more the meaning that the success of last year's holiday sales strategy had been demonstrated by means of proof.
Maybe it's an AmE difference, maybe it's just me, but I prefer "proven" to "proved" as past participle. And either A or B is an acceptable answer to me. I don't get the distinction that Roman55 is trying to make. A is probably the expected answer, but there is nothing wrong grammatically or semantically with choosing B.
I am not a teacher.
Let's assume that it is an AmE/BrE difference because you are the second AmE speaker to make the same point. If that is the case, and I'm not completely alone in my point of view, perhaps the question was set by a BrE speaker and A) was the expected answer. After all, the question wasn't just, 'What is the past participle of "prove"?'
I am a English learner.I prefer A. Below is my understanding
A)proved(is proved to be) is passive sentence(simple present) while B) was proven is passive sentence too (but simple past)
From the "we have decided to repeat part" sentence ,we know that this is present perfect(have done).
Present perfect(have done) is for happenings and actions that are connect with present.So A(simple present) is more attuned to the whole sentence's grammar.
Last edited by sunrose8; 15-Aug-2014 at 17:10.