Câu hỏi: ...................... known as an industrial center, Hartford was the home of manufacturers of firearms,typewriters, bicycles, and even cars.

A. Although

B. Because

C. Once

D. Owing to

Câu 1: Some children ..................... too many toys.

A. has

B. has had

C. have

D. is having

Câu 2: The world wouldn’t be a better place ............... more people respected English teachers.

A. if 

B. unless

C. except

D. when

Câu 3: .................... us with the vocabulary exercises.

A. Our teacher helps

B. Always helps

C. Our teacher

D. Helps to

Câu 4: Students studying in the UK can enjoy an excellent educational environment;..................., theirdegrees are worldwide accepted.

A. moreover

B. still 

C. otherwise

D. however

Câu 5: The articles that John has written .................. difficult to understand.

A. has been

B. was

C. are

D. is

Câu 6: After a short time in England, I began to understand ............... the English see Americans asloud and ill-mannered.

A. whether

B. what

C. how

D. why