The correct answer is: "My uncle is very rich."
Explanation:
* **Present Simple** is used to describe habits, general truths, and facts. It typically uses the base form of the verb (or the -s/-es form for third-person singular subjects).
Let's analyze the sentences:
* "My uncle is very rich.": The verb "is" is the Present Simple form of "to be." It describes a general truth about the uncle.
* "He isn't writing at the moment.": This is Present Continuous, which is used for actions happening now.
* "Ann is playing the piano right now.": This is also Present Continuous, indicating an action happening at the moment of speaking.
* "The bear is sleeping near the river.": This is Present Continuous as well, used to describe an action that is happening around now.
Развернутый ответ на русском языке:
Правильный ответ: "My uncle is very rich." Это предложение написано в Present Simple, потому что глагол "is" (является) – это форма глагола "to be" в настоящем простом времени. Present Simple используется для описания привычек, общих истин и фактов. Остальные предложения используют Present Continuous, которое описывает действия, происходящие в данный момент или около того.