Câu bi đông P1

We must take care of all living species on Earth.

• All living species on Earth had been taken care of by us.

• All living species on Earth are taken care of by us.

• All living species on Earth must be taken care of by us

• All living species on Earth will be taken care of by us.

They believe that touching the head of a Buddha statue is a sign of disrespect.

• Touching the head of a Buddha statue is believed to have been a sign of disrespect.

• It is believed that touching the head of a Buddha statue is a sign of respect.

• Touching the head of a Buddha statue is believed to be a sign of disrespect.

• It was believed that touching the head of a Buddha statue is a sign of disrespect.

People claimed that they saw an alien.

• They were claim to see an alien.

• It is claim that they saw an alien.

• They are claimed to have seen an alien.

• It was claimed that they saw an alien.

People said that he saw the accident.

• He is said to be seen the accident.

• It was said that he saw the accident

• It said that he saw the accident

• It is said that he saw the accident.

Turn off all the switches before leaving the room.

• All the switches must be turned off before leaving the room.

• All the switches must be turned off before you leave the room.

• You must leave the room before turning off all the switches.

• You must leave the room as soon as you turned off all the switches.

The German didn't build this factory during the Second World War.

• This factory wasn't built by the Greens by the Second World War.

• This factory isn't built by the Greens during the Second World War.

• This factory wasn't built by the Greens during the Second World War.

• This factory is built by the Greens during the Second World War.

People expect that he will join the company soon.

• It is expected that he will join the company soon.

• It will be expected that he will join the company soon.

• He is expected that he will join the company soon.

• It was expected that he will join the company soon.

People use computers for various purposes.

• Computers are being used for various purpose

• Computers will be used for various purposes.

• Computers have been used for various purposes.

• Computers are used for various purposes.

I /so/ delighted/ receive/ a surprise birthday present/ my sister.

• I was so delighted to be received a surprise birthday present from my sister

• I was so delighted to receive a surprise birthday present from my sister

• I was so delighted to receive a surprise birthday present of my sister

• I was so delighted to received a surprise birthday present from my sister

People use computers for various purposes.

• Computers are being used for various purposes.

• Computers have been used for various purposes.

• Computers are used for various purposes.

• Computers will be used for various purposes.