You can use either. "is" in the first sentence is OK at all levels of English, whereas "is" in the second is colloquial. In the first sentence I would more naturally use "is".
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pleasehelpHow come you loathe such expression?I find it sloppy and lazy. I associate it with people whose English is impoverished. You may want to canvass other people's opinions here to see if it's just me (it's not uncommon for people to have pet hates where the use of English is concerned!)
pleasehelpSo you're saying when in speech/