What is it made of?

What are these objects made of?

Groups:

(a) METAL

,

(b) WOOD

,

(c) PLASTIC

,

(d) PAPER

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1. 1) The keys are made of​ (a)   .

• metal
• plastic
• wood
• paper

1. 2) The origami is made of​​ (a)  

• plastic
• wood
• metal
• paper

1. 3) The chair is made of​​ (a)  

• plastic
• wood
• metal
• paper

1. 4) The cup is made of​​ (a)  

• plastic
• wood
• metal
• paper

1. 5) The cupboard is made of​​ (a)  

• plastic
• wood
• metal
• paper

1. 6) The table is made of​​ ​ (a)  

• plastic
• metal
• paper
• wood