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 students are nervous of computers or anything high-tech ................. others enjoy newchallenges and regard learning how to use computers as a kind of game.

A. and

B. but

C. while

D. however

Câu 2: Era suggested that rising wages were one of the primary causes of inflation .................. thegovernment should take action to control wages.

A. so

B. for example

C. therefore

D. because

Câu 3: The world wouldn’t be a better place ............... more people respected English teachers.

A. if 

B. unless

C. except

D. when

Câu 4: The clothes in those boxes ............. to my sister.

A. belong

B. was belonging

C. is belonging

D. belongs

Câu 5: The music that they listen to .................... them to relax.

A. help

B. are helping

C. helps

D. helping

Câu 6: Many people .................. this city every year.

A. visits

B. visit

C. is visiting

D. was visiting