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

A. short

B. shortest

C. the shortest

D. shorter

Câu 1: Kathleen was the only student………………..the test.

A. falls

B. is failing

C. failed

D. to fail

Câu 2: The weather yesterday was extremely .......................

A. hotly

B. heat

C. hot

D. heater

Câu 3: Please play that music ............................

A. softly

B. soften

C. soft

D. softens

Câu 4: The people………………….this office are very helpful.

A. In

B. work

C. are working

D. work in

Câu 5: Biology is…………………..of all my classes this semester.

A. the hardest

B. harder

C. hardly

D. harder than

Câu 6: Today is………………..day we have had all week.

A. colder than 

B. the coldest

C. colder

D. coldest