определить времена глагола 1) she works hard and knows the language. 2) when you to have breakfast yesterday ? I to have breakfast at nine in the morning. 3) next year I will learn french. 4) how many chairs were there in this room? 5) now we have to translate the new text

Я особо не понял вопроса насчет определения, если некоторые глаголы можно понять, а некоторые даже не поставлены в нужное время:

1) works, knows - Present Simple

2) When did you have breakfast yesterday? I had breakfast at nine in the morning: did have, had - Past Simple

3) will learn - Future Simple

4) were - Past Simple

5) have to - модальный глагол (но now указывает на Present Continuous)