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1.Are there many reasons to go on a business trip?

2. Why are there many reasons to go on a business trip?

3. There are many reasons to go on a business trip, aren't there?

4. Are there  many reasons to go  or not to go on a business trip?

There are not many  reasons to go on a business trip.

 

1. May  personal belongings be brought in duty-free?

2. What may be brought in duty-free?

3.May  personal belongings or pets be brought in duty - free?

4. As a rule personal belongings may be brought in duty-free, may not they?

 

As a rule personal belongings may not  be brought in duty-free.