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

A. that are

B. being

C. are

D. are being

Câu 5: Commercial centers are ................ they were many years ago.

A. as popular than

B. the most popular

C. the most popular than

D. more popular than

Câu 6: Hotels have developed ................... restaurants in this area.

A. as rapid as

B. as rapid than

C. so rapidly that

D. as rapidly as