No one but the experts was able to realize that the painting was an imitation. It greatly resembled the original.
A.It was obvious that only a person with great talent could fake a painting so successfully.
B.It was hard for ordinary people to judge between the fake painting and real one, but not for the experts.
C.The painting looked so much like the authentic that only the expers could tell it wasn’t genuine.
D.It was almost impossible for amateurs to realize that the painting was not authentic, though the experts could judge it quite easily.

He was suspected of giving away government secrets to the enemy. They have investigated him for days.
A.Suspecting of giving away government secrets to the enemy, he has investigated them for days.
B.Having suspected of giving away government secrets to the enemy, he has investigated them for days.
C.He had been investigated for days, suspected of giving away government secrets to the enemy.
D.Suspected of giving away government secrets to the enemy, he has been investigated for days

The burglar might come back. You’d better change all the locks.
A.The burglar will come back unless you change all the locks.
B.If you don’t change all the locks, the burglar could come back.
C.You’d better change all the locks in case the burglar comes back.
D.You’d better change all the locks or the burglar will come back.

We planned to visit Petronas Building in the afternoon. We could not afford the fee, however.
A.As planned, we could not afford the visit to Petronas Building in the afternoon because of the fee.
B.We visited Petronas Building in the afternoon though the fee was too high for us.
C.We are going to visit Petronas Building in the afternoon but the fee was too high for us.
D.The fee was, however, high enough for us to plan a visit to Petronas Building in the afternoon.

The wedding took place last Friday. Only members of the family were invited to it.
A.Only members of the family were invited to the wedding, which took place last Friday.
B.The wedding, where only members of the family were invited to, took place last Friday.
C.The wedding took place last Friday, when only members of the family were invited to.
D.The wedding, which only members of the family were invited to, took place last Friday.

She phoned him early in the morning. She didn’t want him to forget to bring along the document.
A.She phoned him early in the morning so that he would not forget to bring along the document.
B.She phoned him early in the morning though she didn’t want him to forget to bring along the document.
C.She phoned him early in the morning so that she wanted him to bring along the document.
D.She phoned him early in the morning when she didn’t want him to forget to bring along the document.

I had my seat belt on during an accident last year. I was fortunate not to sustain any injuries.
A.Although I had my seat belt on during an accident last year, I was fortunate not to sustain any injuries.
B.The fact that I had my seat belt on during an accident last year, I was fortunate not to sustain any injuries.
C.I had my seat belt on during an accident last year, as a result, I was fortunate not to sustain any injuries.
D.Having seat belt on during an accident last year in order that I was fortunate not to sustain any injuries.

(Đề thi thử chuyên Vinh-2018)
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.

(Đề minh họa-2018)
The young girl has great experience of nursing. She has worked as a hospital volunteer for years.
A.Before she worked as a hospital volunteer for years, the young girl has great experience of nursing.
B.Much as she has worked as a hospital volunteer for years, the young girl has great experience of nursing.
C.Having worked as a hospital volunteer for years, the young girl has great experience of nursing.
D.With great experience of nursing, the young girl has worked as a hospital volunteer for years.

(Đề minh họa-2018)
Peter told us about his leaving the school. He did it on his arrival at the meeting.
A.Only after his leaving the school did Peter inform us of his arrival at the meeting.
B.Not until Peter told us that he would leave the school did he arrive at the meeting.
C.Hardly had Peter informed us about his leaving the school when he arrived at the meeting.
D.No sooner had Peter arrived at the meeting than he told us about his leaving the school.