It's raining cats and dogs

[fatiha]

Test No. express/advan-1 "Animals", question 4

I shouldn't go outside without a raincoat because it's raining cats and dogs.

(a) it's just started to rain
(b) it's going to rain
(c) it's raining very heavily
(d) it's raining a little

Test No. express/advan-1 "Animals", answer 4

I shouldn't go outside without a raincoat because it's raining very heavily.

Correct answer: (c) it's raining very heavily
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what shall I answer?

[Alan]

You choose what you think is the sentence that best explains: it's raining cats and dogs and that means : it's raining very heavily, which is option (c).
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English as a Second Language
You can read my ESL story Are you a Persuader?

[Rich7]

Does it sound good to you to say "very heavily" or it is just my foreing ear playing me.

[Alan]

Very heavily sounds all right to me.
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English as a Foreign Language
You can read my EFL story Subjunctive