What on earth are the police busy with? —They have been looking into how the plane crash _______.

_ she might, Sue couldn’t get the door open.

Excuse me. I wonder if you can provide me ______ some information about the fantastic sights here.—Sure. With pleasure.

与例句中加横线词的活用现象相同的一项是（ ) 例：不知东方之既白

Have you got any particular plans for the coming holiday?—Yes.________，I’m going to visit some homes for the old in the city.