Yes, they are; but the "inversion" sounds more formal. Check these: Should you have any additional questions, do not hesitate to contact us. If you have any additional questions, we will be pleased to help you.
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Yes, they are; but the "inversion" sounds more formal. Check these:
Should you have any additional questions, do not hesitate to contact us.
If you have any additional questions, we will be pleased to help you.
Hope this helps!