Câu hỏi: They were exposed to biased information, so they didn't know the true story.

A. If they got unbiased information, they could know the true story.

B. If they had unbiased the information, they could have known the true story.

C. If they had been exposed to unbiased information, they would have known the true story.

D. If they have exposed to the unbiased information, they could have seen the true story.

Câu 1: I did not see Susan off at the airport. I feel bad about it now.

A. I could have seen Susan off at the airport.

B. If only I had seen Susan off at the airport.

C. That I did not see Susan off at the airport escapes me now.

D. It suddenly dawns on me that I should have seen Susan off at the airport.

Câu 2: We cut down many forests. The Earth becomes hot.

A. The more forests we cut down, the hotter the Earth becomes.

B. The more we cut down forests, the hotter the Earth becomes.

C. The more forests we cut down, the Earth becomes hotter.

D. The more we cut down forests, the Earth becomes hotter.

Câu 3: The government knows the extent of the problem. The government needs to take action soon.

A. The government knows the extent of the problem whereas it needs to take action soon.

B. The government knows the extent of the problem so that it needs to take action soon.

C. Knowing the extent of the problem, the government needs to take action soon.

D. The government knows the extent of the problem, or else it needs to take action soon.

Câu 4: The substance is very toxic. Protective clothing must be worn at all times.

A. Since the substance is very toxic, so protective clothing must be worn at all times.

B. So toxic is the substance that protective clothing must be worn at all times.

C. The substance is such toxic that protective clothing must be worn at all times.

D. The substance is too toxic to wear protective clothing at all times.

Câu 5: In your country, schools are open to all. The accept children of any race, color or creed.

A. In our country, schools are open to all children irrespective of race, color or creed.

B. In our country, schools are open to all children except for race, color or creed.

C. Apart from race, color or creed, schools are open to all children in your country.

D. Children of any race, color or creed can be admitted to our schools when they are opened.

Câu 6: "I have never been to Russia. I think I shall go there next year.” said Bill.

A. Bill said that he had never been to Russia and he thought he would go there the next year.

B. Bill said that he would have never been to Russia and he thinks he would go there the next year.

C. Bill said that he had never been to Russia and he thinks he will go there the next year.

D. Bill said that he has never been to Russia and he thinks he would go there the next year.