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

A. has been

B. was

C. are

D. is

Câu 1: ................ the English teacher said was downright inspiring.

A. That

B. What

C. As

D. When

Câu 2: Taking a trip to the mountains .................... more fun than going to the beach.

A. are

B. were

C. is

D. have been

Câu 3: The water in this swimming pool ...................... too cold.

A. are feeling

B. feel

C. feels

D. was feeling

Câu 4: Learning foreign languages .................. important.

A. is

B. are

C. have

D. are having

Câu 5: The clothes in those boxes ............. to my sister.

A. belong

B. was belonging

C. is belonging

D. belongs

Câu 6: Chicago ............... city in the Midwest.

A. is an important

B. an important is

C. important is

D. is it important