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

A. saw

B. are seen

C. was seen

D. see

Câu 1: Computers are considered as .................... tools today.

A. the most modern

B. more modern

C. modern as

D. much modern than  

Câu 2: 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 3: Thehamburger is eaten all over the world. The first hamburgers(1)........................ in Connecticut in 1895 by an Americanchefcalled LouisLassen. Louis (2)................... them hamburgers because he (3)..................... the recipe by sailors from Hamburg in Germany. Hamburgers (4)........................ afavourite in America in the early twentieth century. Their popularity(5)...................... even more after the Second WorldWar,            when they(6)................. in large quantities by teenagers who (7) ................... fast foodto family meals. In 1948, two brothers, Dick and Mac McDonald(8) ...................... a drive-in hamburger restaurant in San Bernardino, California.Since then, over 25,000 McDonald's restaurants (9).................. worldwide andnow 35 million McDonald's hamburgers (10)............................. every day in 115countries from India to the Artie Circle.

A. are sold

B. were sold

C. have been sold  

D. sold

Câu 4: Willa Cather, ....................... a prominent American writer, grew up in Nebraska during the early farming years. 

A. who became

B. became

C. she became

D. it is she who became

Câu 5: Choose the correct answer A, B, C or D.

A. less convenient as

B. less convenient than

C. not so convenient than

D. the most convenient as

Câu 6: The electric light bulb ........................ by Thomas Edison.

A. invented

B. was invented

C. invents

D. is invented