Câu hỏi: In 1850 ........................ established one of the first detective agencies in theUnited States.

A. it was detectivePinkerton

B. detective Pinkerton 

C. detective Pinkerton who

D. when detectivePinkerton

Câu 1: I .................... your keys on the table by the bed last night.

A. saw

B. are seen

C. was seen

D. see

Câu 2: Samuel Clemens, ................ under the pen name Mark Twain, createdcharacters that reflected purely American life.

A. he wrote

B. was writing

C. wrote

D. who wrote

Câu 3: The journey, ........................ alone for most of the way, was in the name of charity.

A. I undertook

B. that I undertook

C. which I undertook

D. undertaking

Câu 4: ...................... in 1607, Jamestown in Virginia was the first settlement in theNew World.

A. Founded

B. It was founded

C. Founding

D. To be found

Câu 5: Books .............. of leather are longer lasting than books that are made of paper.

A. made

B. are made

C. making 

D. which made

Câu 6: I ..................... you a copy of the article tomorrow.

A. send

B. was sending

C. will send

D. will be sent