Original: The weather is too sunny.

Here are the sentences with the antonyms of the underlined words:

1. Original: The weather is too sunny. Antonym for sunny: cloudy Rewritten sentence: The weather is too cloudy.

2. Original: The examination is too difficult. Antonym for difficult: easy Rewritten sentence: The examination is too easy.

3. Original: The governor will depart in twenty minute. Antonym for depart: arrive Rewritten sentence: The governor will arrive in twenty minute.

4. Original: The game is boring. Antonym for boring: interesting Rewritten sentence: The game is interesting.

5. Original: The famous actress was seen today. Antonym for actress: actor Rewritten sentence: The famous actor was seen today.

6. Original: She quickly sweep the house. Antonym for quickly: slowly Rewritten sentence: She slowly sweep the house.

7. Original: She is too beautiful to look at. Antonym for beautiful: ugly Rewritten sentence: She is too ugly to look at.

Here are the final answers:

1. The weather is too cloudy.
2. The examination is too easy.
3. The governor will arrive in twenty minute.
4. The game is interesting.
5. The famous actor was seen today.
6. She slowly sweep the house.
7. She is too ugly to look at.