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

A. made

B. are made

C. making 

D. which made

Câu 1: The electric light bulb ........................ by Thomas Edison.

A. invented

B. was invented

C. invents

D. is invented

Câu 2: John always .................... his car in the lot by the school.

A. park

B. parks

C. is parked

D. was parked

Câu 3: 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 4: Choose the correct answer to fill in the blank. 

A. that are

B. being

C. are

D. are being

Câu 5: 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 6: Computers are considered as .................... tools today.

A. the most modern

B. more modern

C. modern as

D. much modern than