[m] (a) 1. Marmaduke and Mary have mumps. 2. "They mustn't munch marmalade sandwiches at the mo-ment", says Mummy. 3. The museum has many memorable monuments to the 5. Just a moment, Mathew. 6. If my memory serves me... [n]b) 1. Nick is no genius. 2. No doubt Nickolas knows Nigel. 3. Naughty, Nancy has bent the knitting needles and knotted Nanny's knitting. 4. Henry hands his nephew Nigel a brand-new pound note on Sundays. [n] — [m]c) 1. No offence meant. 2. It's no concern of mine. 3. The name slipped my memory. 5. You nuser on the but me, eier spent in vain. 6. Nick knows no more about the murder than the man in the moon.

It looks like you have provided a mix of sentences and phrases under the categories of (m) and (n). Here is a summary of the content provided:

(a) 1. Marmaduke and Mary have mumps. 2. "They mustn't munch marmalade sandwiches at the moment", says Mummy. 3. The museum has many memorable monuments to the 5. 4. Just a moment, Mathew. 5. If my memory serves me...

(b) 1. Nick is no genius. 2. No doubt Nickolas knows Nigel. 3. Naughty, Nancy has bent the knitting needles and knotted Nanny's knitting. 4. Henry hands his nephew Nigel a brand-new pound note on Sundays.

(c) 1. No offence meant. 2. It's no concern of mine. 3. The name slipped my memory. 4. You nuser on the but me, either spent in vain. 5. Nick knows no more about the murder than the man in the moon.

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