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Noun and Gerund
I am always confused when using noun and gerund to make sentences.
for instance:
Copper pollution from waste streams may enter the air through waste and fossil fuels combustion.
Can I replace 'waste and fossil fuels combustion' by 'burning waste and fossil fuels'?
and please tell me what the difference between them is?
Thanks a lot.
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how to use 'greatly'?
Please tell me how to use 'greatly'.
Can I say "the dog rejoices greatly when I go home." ?
Thanks
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Question about the verb 'concern'
Can I use the sentence?
'My father concerns about my study result'
I looked for the word in oxford dictionary, and I see it means worry somebody. I don't know I can use ' concern about something?
Thanks for reading.
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A question about articles
In the sentence:
Chemical reactions is done in laboratory.
Does the word 'laboratory' need an article?
Thanks
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