I_______a research since last week. I will finish it this Friday.

A. so that

B. due to

C. in spite of

D. because

A. Made

B. Have made

C. Having make

D. Having made

A. forests

B. soil

C. water

D. fossil fuels

A. I come from a city that located in the southern part of the country.

B. I come from a city locating in the southern part of the country.

C. I come from a city located in the southern part of the country.

D. I come from a city has located in the southern part of the country.

A. cheat

B. cheated

D. being cheated

A. talking

B. talkative

C. talked

D. is talked

A. Trang An Scenic Landscape Complex is the eighth World Heritage Site in Vietnam to have been recognised by UNESCO.

B. Trang An Scenic Landscape Complex is the eighth World Heritage Site in Vietnam to has been recognised by UNESCO.

C. Trang An Scenic Landscape Complex is the eighth World Heritage Site in Vietnam to ave been recognised by UNESCO.

D. Trang An Scenic Landscape Complex is the eighth World Heritage Site in Vietnam to have recognised by UNESCO.