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The choir sang passionately, as they moved through elaborate and challenging four-part harmonies.

A) as they moved through elaborate and challenging four-part harmonies
B) as they were moving through elaborate and challenging four-part harmonies
C) moving themselves through elaborate and challenging four-part harmonies
D) as it moved through elaborate and challenging four-part harmonies
E) as it moved through challenging four-part harmonies elaborately


1) They vs it. In the first clause they have used singular verb "Sang" , so the choir is a signular noun.

2) elaborate and challenging four-part harmonies vs challenging four-part harmonies elaborately .

The first one is used as adjectivies and are in parallel.
The meaning of the sentence is getting changed with the second version.
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The choir sang passionately, as they moved through elaborate and challenging four-part harmonies.

A) as they moved through elaborate and challenging four-part harmonies
B) as they were moving through elaborate and challenging four-part harmonies
C) moving themselves through elaborate and challenging four-part harmonies
D) as it moved through elaborate and challenging four-part harmonies
E) as it moved through challenging four-part harmonies elaborately


1) They vs it. In the first clause they have used singular verb "Sang" , so the choir is a signular noun.

2) elaborate and challenging four-part harmonies vs challenging four-part harmonies elaborately .

The first one is used as adjectivies and are in parallel.
The meaning of the sentence is getting changed with the second version.

Thanks all for replying. I got my mistake here. I dont know I was some how considering challenging as adverb whereas it should be adjectives and yes 'D' is in parallel. Thanks all for help. :)
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hari1985
The choir sang passionately, as they moved through elaborate and challenging four-part harmonies.
1) They vs it. In the first clause they have used singular verb "Sang" , so the choir is a signular noun.

This is a good thing to look at in general, but unfortunately, it isn't a good clue here. When the verb is in the past tense, there isn't any difference between plural and singular: 'they sang' and 'he sang' are both correct, as are 'they jumped' and 'he jumped', 'they ran' and 'he ran'. You actually just need to know that 'choir' is a singular word. One way to check is to plug it into a smaller sentence and test your ear: would you say 'the choir is terrible' or 'the choir are terrible'? In American English, it's the former, so you know that 'choir' is singular.
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The problem with E is that elaborately is referring to the singing and not the harmonies. We want to say elaborate harmonies. There's no subject-verb agreement error with d, I'm not really sure what you mean by that. Hope this helps.

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hari1985
The choir sang passionately, as they moved through elaborate and challenging four-part harmonies.
1) They vs it. In the first clause they have used singular verb "Sang" , so the choir is a signular noun.

This is a good thing to look at in general, but unfortunately, it isn't a good clue here. When the verb is in the past tense, there isn't any difference between plural and singular: 'they sang' and 'he sang' are both correct, as are 'they jumped' and 'he jumped', 'they ran' and 'he ran'. You actually just need to know that 'choir' is a singular word. One way to check is to plug it into a smaller sentence and test your ear: would you say 'the choir is terrible' or 'the choir are terrible'? In American English, it's the former, so you know that 'choir' is singular.

Can't choir be used as both singular and plural based on its usage. In this sentence there is no clue whether choir is used as singular or plural.
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