13) Choose the sentences in the Passive Voice. (2 1. Are the boxes made of cardboard?
2. Are the boxes made of cardboard small?
B. What are the boxes made of?
4 Are there any boxes made of cardboard here?
A) 1,3,4 b)2,4 c) 1,2,4 d)2,3 e) 1,3​

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