Question

____the end of the day, we were very tired.

A．In

B．At

C．To

D．By

Answer 1

B

试题分析：句意：在这一天结束的时候我们非常累。in the end ,最后；at the end of…,在……结束时，强调时间点；by the end of ,在···以前。故选B。