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My husband was out of the country on a business trip.

He did say something about an important business trip coming up.

I wasn't too specific about the reason for my business trip, however.

"He's gone for two weeks on a business trip and he never calls home once to see how his wife's doing?"

"Is the business trip really going to take us all five days?"

He may have killed a friend on a business trip and now, from the looks of things, he's after her.

I'd told her I was off on a business trip.

We're not on a business trip just now, but we might be later.

"She could be away on a business trip for her father."

He had spent a good deal of money to bring her along on this business trip.