Question

____the end of the day, we were very tired.

A．In

B．At

C．To

D．By

Answer 1

B

試題分析：句意：在這一天結束的時候我們非常累。in the end ,最后；at the end of…,在……結束時，強調時間點；by the end of ,在···以前。故選B。