Question

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Passive Voice
Open the brackets:
1) Water or the marine environment ... (can/to contaminate) by highly toxic nuclear waste.
2) The heat of the Earth ... (to trap) by some gases in the atmosphere, so temperatures increase.
3) Major problems for sea otters ... (to cause) by oil spills.
4) Deforestation ... (directly, to relate) to the loss of many species.
5) The population of amur leopard ... (completely/to destroy) by illegal hunters by 2016.
6) The turtle populations of Asia ... (to wipe out) in a few decades if nothing is done.

Answer 1

1 can be contaminated

2 is trapped

3 are caused

4 is directly related

5 was completely destroyed

6 will be wiped out

Answer 2

Open the brackets:

1) Water or the marine environment ... (can be contaminated) by highly toxic nuclear waste.

2) The heat of the Earth ... (is trapped) by some gases in the atmosphere, so temperatures increase.

3) Major problems for sea otters ... (are caused) by oil spills.

4) Deforestation ... (is directly related) to the loss of many species.

5) The population of Amur leopard ... (had been completely destroyed) by illegal hunters by 2016.

6) The turtle populations of Asia ... (will be wiped out) in a few decades if nothing is done.