Student’s Book All the written activities in this book must be

c. 
What can we do to solve these problems?
Glossary
▪
damage: 
daño
▪
coal: 
carbón
▪
chemicals: 
productos químicos
▪
cyanide: 
cianuro
▪
farmland: 
tierra de cultivo
▪
cattle: 
ganadería
▪
loss: 
pérdida
▪
moors: 
páramos

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146
Lesson 6
6
© MEN Colombia
146
7. 
Look at these sentences from the text. Then choose the correct use below.
Focus on Language
1. Colombia has been losing its forests 
for a number of decades. 
2. People have been practising illegal mining 
even in protected nature reserves.
We use the present perfect continuous to talk about …
a. 
an action that happened a number of times but no longer happens.
b. 
an action that started in the past and is still happening.
8. 
Find one more example of the present perfect continuous in the text on page 145. Then 
answer the questions.
a. 
What auxiliary verbs do we use?
b.
What form does the main verb have?
9. 
Complete the sentences with the verbs in the box in the present perfect continuous. 
a. 
Simon 
Elsa a lot recently. Do you think they’re a couple? 
b. 
I 
all day and I’m really tired. 
c. 
People 
tigers for years and now they’re nearly extinct.
d. 
Some organisations 
to convince people to stop polluting the planet.
e. 
Some governments 
sustainable ways of farming to help the planet.
promote – meet – study – try – kill