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3 Choose the correct option (a, b or c) to complete the sentences.
1 Most shoes are made of ________.
a glass
b metal
c leather
2 Please clean the ________ in the windows.
a silk
b glass
c cotton
3 People often wear ________ clothes during warm weather.
a cotton
b metal
c plastic
4 This ________ comes from sheep in Argentina.
a silk
b cotton
c wool
5 Knives and forks are usually made of ________.
a glass
b metal
c leather
6 The Swenkas like wearing expensive ________ ties.
a silk
b leather
c wool