_____, there are black holes in space.
A.theorize
B.theoretical
C.theoretically
D.theorist

We arrived at the airport. We realized our passports were still at home.
A.We arrived at the airport and realized that our passports are still at home.
B.Not until we arrived at the airport did we realize that our passports were still at home.
C.Not until had we arrived at the airport, we realized our passports were still at home.
D.It was until we arrived at the airport that we realize our passports were still at home.

They improve the quality of their products. We will order more handbags from them.
A.Even if they improve the quality of their products, we will order more handbags from them.
B.Unless they improve the quality of their products, we will order more handbags from them.
C.Only when they improve the quality of their products will we order more handbags from them.
D.In case they improve the quality of their products, we will order more handbags from them.

We chose to find a place for the night. We found the bad weather very inconvenient.
A.Bad weather was approaching, so we started to look for a place to stay.
B.The bad weather prevented us from driving any further.
C.Seeing that the bad weather had set in, we decided to find somewhere to spend the night.
D. Because the climate was so severe, we were worried about what we’d do at night.

Tuition fees were increased. There were many objections from students and parents.
A.There had been too many objections from students and parents while tuition fees were increased.
B. Tuition fees were increased as there were many objections from students and parents.There were many objections from students and parents, so tuition fees were increased
C.There were many objections from students and parents, so tuition fees were increased
D.Tuition fees were increased in spite of the fact that there were many objections from students and parents.

Mr. Brown wanted to get some fresh air in the room. He opened the window
A.Mr. Brown wanted to get some fresh air in the room because he opened the window.
B.Having opened the window, the room could get some fresh air by Mr. Brown.
C.
Mr. Brown got some fresh air in the room, even though he opened the window.
D.Mr. Brown opened the window in order to get some fresh air in the room.

It was an interesting novel. I stayed up all night to finish it.
A.I stayed up all night to finish the novel so it was interesting.
B.So interesting was the novel that I stayed up all night to finish it.
C.Unless it were an interesting novel, I would not stay up all night to finish it.
D.Though it was an interesting novel, I stayed up all night to finish it.

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.

Marry loved her stuffed animal when she was young. She couldn’t sleep without it
A.When Marry was young, she loved her stuffed animal so much that she couldn’t sleep without it.
B.When Marry was young, she loved her stuffed animal so as not to sleep with it.
C.When Marry was young, she loved her stuffed animal though she couldn’t sleep without it.
D.As Marry couldn’t sleep without her stuffed animal when she was young, she loved it.

John Smith is a farmer. I bought his land.
A.John Smith, who is a farmer, whose land I bought.
B.John Smith, whose land I bought, is a farmer.
C.John Smith, who is a farmer, bought his land.
D.John Smith, whom I bought his land, is a farmer.