Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

He has been studying for many years. He should have realized sooner that his grammar was incorrect

A. He has been studying for many years to have soon realized that his grammar was incorrect

B. He has been studying for many years that he should have realized sooner that his grammar was incorrect

C. No sooner has he been studying for many years than he should have realized that his grammar was incorrect

D. Though he has been studying for many years, he did not realize sooner that his grammar was incorrect

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

He has been studying English for many years. He should have realized sooner that his  grammar was incorrect.

A. He has been studying English for many years to have soon realized that his grammar was incorrect. 

B. He has been studying English for many years that he should have realized sooner that his grammar was incorrect. 

C. No sooner has he been studying English for many years than he should have realized that his grammar was incorrect. 

D. Though he has been studying English for many years, he did not realize sooner that his grammar was incorrect.

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

Alternative sources of energy have environmental advantages. It’s not easy to make full use of them.

A. Because alternative sources of energy have environmental advantages, it’s not easy to make full use of them.

B. Alternative sources of energy have environmental advantages, so it’s not easy to make full use of them.

C. Despite their environmental advantages, it’s not easy to make full use of alternative sources of energy.

D. Although alternative sources of energy have environmental advantages, but it’s not easy to make full use of them.

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

Alternative sources of energy have environmental advantages. It’s not easy to make full use of them.

A. Because alternative sources of energy have environmental advantages, it’s not easy to make full use of them

B. Alternative sources of energy have environmental advantages, so it’s not easy to make full use of them

C. Despite their environmental advantages, it’s not easy to make full use of alternative sources of energy

D. Although alternative sources of energy have environmental advantages, but it’s not easy to make full use of them

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

Alternative sources of energy have environmental advantages. It’s not easy to make full use of them.

A. Because alternative sources of energy have environmental advantages, it’s not easy to make full use of them

B. Alternative sources of energy have environmental advantages, so it’s not easy to make full use of them

C. Despite their environmental advantages, it’s not easy to make full use of alternative sources of ene

D. Although alternative sources of energy have environmental advantages, but it’s not easy to make full use of them

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

Alternative sources of energy have environmental advantages. It’s not easy to make full use of them.

A. Because alternative sources of energy have environmental advantages, it’s not easy to make full use of them

B. Alternative sources of energy have environmental advantages, so it’s not easy to make full use of them

C. Despite their environmental advantages, it’s not easy to make full use of alternative sources of energy

D. Although alternative sources of energy have environmental advantages, but it’s not easy to make full use of them

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

 Alternative sources of energy have environmental advantages. It’s not easy to make full use of them.

A. Because alternative sources of energy have environmental advantages, it’s not easy to make full use of them.

B. Alternative sources of energy have environmental advantages, so it’s not easy to make full use of them.

C. Despite their environmental advantages, it’s not easy to make full use of alternative sources of energy.

D. Although alternative sources of energy have environmental advantages, but it’s not easy to make full use of them.

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

We arrived at the airport. We realized our passports were still at home.

A. It was until we arrived at the airport that we realize our passports were still at home

B. We arrived at the airport and realized that our passports are still at home.

C. Not until had we arrived at the airport, we realized our passports were still at home

D. Not until we arrived at the airport, did we realize that our passports were still at home

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

We arrived at the airport. We realized our passports were still at home.

A. It was until we arrived at the airport that we realize our passports were still at home

B. We arrived at the airport and realized that our passports are still at home

C. Not until had we arrived at the airport, we realized our passports were still at home

D. Not until we arrived at the airport, did we realize that our passports were still at home