Câu hỏi: Learning foreign languages .................. important.

A. is

B. are

C. have

D. are having

Câu 1: The articles that John has written .................. difficult to understand.

A. has been

B. was

C. are

D. is

Câu 2: The clothes in those boxes ............. to my sister.

A. belong

B. was belonging

C. is belonging

D. belongs

Câu 3: Chicago ............... city in the Midwest.

A. is an important

B. an important is

C. important is

D. is it important

Câu 4: ..................... a good concert.

A. People enjoys

B. Enjoy them

C. People they enjoy

D. People enjoy

Câu 5: The world wouldn’t be a better place ............... more people respected English teachers.

A. if 

B. unless

C. except

D. when

Câu 6: The price of oil .................last month.

A. fell

B. it fell

C. fell it

D. felt