A. Many wonder what happens to what we throw away.
B. Many wondered what happened to what we threw away.
C. Many wondered what has happened to what we threw away.
D. Many wonder what happened to what we threw away.
A. The lecturer said that in China, waste was growing twice as fast as the population.
B. The lecturer said that in China, waste is growing twice as fast as the population.
C. The lecturer said that in China, waste has been growing twice as fast as the population.
D. The lecturer said that in China, waste had been growing twice as fast as the population.
A. Emily said that we were staying in tonight.
B. Emily said that they were staying in tonight
C. Emily said that we were staying in that night.
D. Emily said that they were staying in that night.
A. We will not know where all our rubbish goes.
B. We should know where all our rubbish goes.
C. We did not know where all our rubbish goes.
D. We will never know where all our rubbish went.
A. He said his girlfriend that he had bought a ring.
B. He said his girlfriend that he bought a ring.
C. He told his girlfriend that he had bought a ring.
D. He told his girlfriend that he bought a ring.
A. She said that they had been to work the day before.
B. She told that they had been to work the day before.
C. She said that they had been to work the following day.
D. She said that she had been to work the day before.
A. Mum urged Tommy to waste time.
B. Mum advised Tommy not to waste your time.
C. Mum advised Tommy not to waste his time.
D. Mum advised Tommy not to waste her time.
A. They told their son that we had seen a strange man in the garden.
B. They told their son that they had seen a strange man in the garden.
C. They told their son that we saw a strange man in the garden.
D. They told their son that they saw a strange man in the garden.
A. Trees, which should be planted everywhere possible, absorb carbon dioxide, a greenhouse gas.
B. Trees should be planted everywhere possible as they absorb carbon dioxide, a greenhouse gas.
C. Trees should be planted everywhere possible to be able to absorb carbon dioxide, a greenhouse gas.
D. Trees should be planted everywhere possible where they absorb carbon dioxide, a greenhouse gas.
A. Biodiversity has its own economic importance, so protection of biodiversity is important.
B. Biodiversity has its own economic importance that protection of biodiversity is important.
C. Protection of biodiversity is so important that biodiversity has its own economic importance.
D. Protection of biodiversity is important to make biodiversity have its own economic importance.
A. implement
B. implements
C. implementing
D. implemented
A. science
B. scientific
C. scientist
D. scientifically
A. observable
B. observing
C. observed
D. observation
A. be
B. have been
C. being
D. having been
A. climate-relating
B. climate-related
C. climatic-relating
D. climatic-related
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