Câu hỏi: Chris is…………………than his brother.

A. short

B. shortest

C. the shortest

D. shorter

Câu 1: Biology is…………………..of all my classes this semester.

A. the hardest

B. harder

C. hardly

D. harder than

Câu 2: Please play that music ............................

A. softly

B. soften

C. soft

D. softens

Câu 3: Kathleen was the only student………………..the test.

A. falls

B. is failing

C. failed

D. to fail

Câu 4: Choose the one word or phrase that best completes the sentence.

A. old

B. older

C. the oldest

D. oldest

Câu 5: Bill ordered two .....................  pizzas.

A. large

B. largeness

C. largely

D. largest

Câu 6: The plant…………………………the window needs water.

A. by the time

B. by

C. is by

D. is