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unit 6 : robots
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7.Using solar energy is clean/dirty and harmless.
clean
Oops!
Okay!
5.We should turn on/turn off electrical equipment when we don't use them.
turn off
Oops!
Okay!
6.We shouldn't pour/hold chemicals into our sinks because they pollute water.
pour
Oops!
Okay!
1.We should use/have public transport more.
use
Oops!
Okay!
8.We should raise/plant more trees because we need them to breathe.
raise
Oops!
Okay!
3.We should take/love animals because they are real friends.
love
Oops!
Okay!
4.Using coal in houses protects/pollutes air very much.
pollutes
Oops!
Okay!
9.We should use/give electric cars because they are clean.
use
Oops!
Okay!
2.We shouldn't hang/cut down trees. We should save them.
cut
Oops!
Okay!
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