Match the words with their definitions. 1 climb 3 hop 2 crawl 4 wander 5 stagger 6 tiptoe 7 leap 9 rush 8 swing 10 descend to jump on one foot to walk around without any clear purpose or direction to move easily and without stopping in the air, backwards and forwards or from one side to the other

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"