May I speak to the headmaster—— He’s not here. He Beijing.

­—Can you come to my party tomorrow— .I have to study for a test.

__________ of time and energy has been spent ininvestigating the murder.

Did you find your new dictionary?—Yes. I found it ____I had left it.

下列各句中的加横线词语与现代汉语意义相同的一项是（ ）