IV.Choose the proper variant: 1.I don’t want to go to the concert beside/ besides I have a lot of work to do. 2.These socks are not pair. They are various/ different. 3.These gloves are expensive – beside/ besides they are too small. I’m not buying them. 4.Computers are a great discovery/ invention of the 20th century. 5.We are so various/ different – I like being at home, but Mary often visits clubs & discos. 6.-Why didn’t you call Helen? – But I did/ do call her. 7.Would you like an orange or a tangerine? – Either/ Neither is fine, thank you. 8.None/ Neither of us have seen today’s newspaper. 9.I offered him coffee or tea, but he didn’t want either/ any. 10.I have two good friends, neither/none is my classmate. 11.John collects stamps. He has various/ different stamps, including rare ones. 12.Sir Alexander Fleming was a Scottish scientist who invented/ discovered penicillin.