Mark the letter A, B, C, or D on your...

Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
We spent the entire day looking for a new apartment.

A. all long day     

B. the long day     

C. day after day     

D. all day long