Choose the right form to render the idea into English
1.новый материал обычно объясняется учителем
a)were explained
b)are explained
c)is explained
d)will be explained
2.новый материал объяснялся вчера в это время
a)am explained
b)have been explained
c)was being explained
d)was explained
3.новый материал будет объяснен на следующей недели
a)will have been explained
b)are explained
c)is explained
d)will be explained
4.не входите в класс. Там объясняется новый материал
a)is explained
b)are being explained
c)is explained
d)is being explained
5.новый материал уже объяснен
a)have been explained
b)are explained
c)has been explained
d)have explained
6.новый материал будет объяснен в конце недели
a)were being explained
b)will explained
c)will have been explained
d)will be explained
7.новый материал был объяснен еще до каникул​

Magic mirrors, a common feature in children's stories since the fairytale Snow White was famously made into a film by Disney, have recently been installed in several stores in the UK. Outfits can now be tried on without having to undress or even find the items in the store, thanks to these neat devices which are in fact computer screens. Stand in front of one and your body is instantly scanned and an image of yourself is displayed on the screen, with your measurements calculated automatically. Items of clothing can be chosen from on-screen menus and superimposed onto your own image, and shoes and accessories can be added to complete the outfit. The new look can be instantly shared with friends on Facebook if an icon is clicked, and the mirrors are often found in independent clothes shops but may be quickly introduced in larger stores across the country.

Once there was a girl in her garden. The girl was bored. Out of boredom, she decided to dig the ground with a stick. She dug. She dug until suddenly she saw the head of a snake peeking out from there. The girl was not afraid, because she loved all the inhabitants of nature. She dug up the ground so that the snake could crawl away. But the snake didn't escape. The girl took it and the snake was very friendly and safe. The girl decided to get this snake as a pet. So many years passed, the snake became attached to the girl, and the girl loved the snake.