Поставьте a, an или some Please!
1) i'm doing ... research into Monroe's death.
2) There is ... luggage in front of the door.
3) Here is ... piece of advice for you.
4) i have ... difficult homework to do this evening.
5) Here is ... interesting bit of news.
1. some
2. a
3. a
4. some
5. an
ответ:в четвёртом a,т.к. some во множественном числе
Объяснение: