Exercise 5 If it's rainy, you should take an umbrella. Tom shouldn't eat so many lollipops. It's bad for his teeth. They have a test tomorrow. They shouldn't go to the cinema. They should stay at home and study! The doctor said:"You should eat healthy food. You shouldn't eat fast food. You shouldn't watch so much TV. You should walk 1 hour a day. You should drink fruit juice and water. You shouldn't drink wine or beer.
Exercise 6 I was very bored in the maths lesson. I almost fell asleep. He was surprised to see Helen. She’d told him she was going to Australia. I could listen to him for hours. He’s one of the most interesting people I’ve ever met. He's got a very annoying habit of always interrupting people. Kids! You're disgusting! Don't talk with your mouths full! Sit down - I've got some very exciting news for you. Oh! Now I'm embarrassed. I didn't get you a present. I'm starting to get very boring with all the delays. I was absolutely astonished when I heard about their marriage. Hi, Jane. Have you had an interesting day?
Правильный вариант C. Passive Voice Simple образуется при глагола to be (в нужном времени и в нужной форме) и V3. Чтобы переделать Active в Passive, прежде всего, нужно определить над кем или над чем происходит действие. Например, в этом предложении действие происходит над стенами, которые красят. Во-вторых, нужно определить какое время в активном залоге. Например, в исходном предложении глагол "paint" стоит в Present Simple. Значит и пассивный залог у нас будет в настоящем времени - Present Passive Active. Поэтому в пассивном залоге глагол to be стоит в настоящем времени (форма "are" потому что "walls" - множественное число). И, в-третьих, если указано в исходном предложении, кто совершает действие, то указываем это и в пассиве - через слово "by"