Câu hỏi: Choose the correct answer to fill in the blank. 

A. that are

B. being

C. are

D. are being

Câu 1: In 1849, Walter Hunt, ...................... American inventor, patented a designthat served as the basis for modem safety pins.

A. an

B. he was an

C. who

D. was an

Câu 2: 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 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: Computers are considered as .................... tools today.

A. the most modern

B. more modern

C. modern as

D. much modern than  

Câu 5: Hotels have developed ................... restaurants in this area.

A. as rapid as

B. as rapid than

C. so rapidly that

D. as rapidly as

Câu 6: Books .............. of leather are longer lasting than books that are made of paper.

A. made

B. are made

C. making 

D. which made