Употребите существительные в форме множественного числа.
1. an old office; some ...
2. a lovely place; some ...
3. a piece of cake; some ...
4. a nice face; some ..
5. a simple sentence; ten ...
6. an old city in Italy; some ....
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1. an old office; some old offices

2. a lovely place; some lovely places

3. a piece of cake; some pieces of cake

4. a nice face; some nice faces

5. a simple sentence; ten simple sentences

6. an old city in Italy; some old cities