Fill in the blanks with the correct form of 'to be' (is/are).

Here are the completed sentences:

1. The flowers in the garden are blooming.
2. The new smartphone is very expensive.
3. The kids in the class are very energetic.
4. The food at the restaurant is delicious.
5. The city during the festival is crowded.
6. The teacher's explanation is clear.
7. The students' assignments are due tomorrow.
8. The weather forecast is predicting rain.
9. The hotel's amenities are excellent.
10. The country's economy is growing.