Предмет: Алгебра, автор: bibitaya

Помогите, не особо понимаю как решить, хотя знаю формулы

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Автор ответа: zanjabill

Упрощение выражений :

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bibitaya: спасибо

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Past Continuous. Exercises. Прошедшее длительное время. Упражнения
Упражнение 1. Раскройте скобки, поставив глаголы в фоpму Past Continuous.
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2. When we came in, the children __________ (to clean) their desks.
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Упражнение 2. Допишите предложения по содержанию текста предыдущего упражнения, используя глаголы в Past Continuous.
1. When someone broke the window Dad _________________
2. When Mum heard the crash she ___________________
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Упражнение 3. Вставьте подходящие по смыслу глаголы в форме Past Continuous.
play swim feed sleep laugh
Yesterday we went to the zoo and saw there a lot of animals. First we went to see the white bears. They __________. Then we went to the cage with monkeys. There were a lot of children in front of the cage. They ___________ because a monkey in the the cage ____________. After that we went to see the elephant. There was a man there. He ____________the elephant. But we ___________ see much of the lions. They _______________.
Упражнение 4. Из имеющихся слов составьте вопросы к готовым ответам. Все вопросы должны быть в Past Continuous.
1. Where | the white bears | swimming | were ?
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2. It | was | raining ?
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3. The elephant | what | eating | was ?
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4. What | was | playing with | the monkey ?
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5. Were | how many lions | sleeping in the cage?
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Упражнение 5. Дополните вопросы и ответы глаголами в Past Continous.
— Mr. Rambler , what _______ you ______ (do) at 6.30 ?
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2. We were speaking about books at the lesson. (what, where)
3. After school they were practising a new game. (alternative)
4. When I came, Nick was cleaning his room, (what)
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