2. Pratice:
- Ask Ps to look at the
b. Then the glass / it is washed with a
detergent liquid
pictures
c. The glass pieces are completely dried.
- Have Ps read the sentences
d. They are mixed with certain specific
chemicals
e. The mixture is melted untill it becomes a
liquid
f. A long pipe is used, it is dipped into the
Ask them to work in pairs to
liquid, then the liquid is blown into intended
chane these senteces into
passive
shapes.
1 – 4 – 3 - 5 – 2 – 6
II. Use the correct form of the verbs
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