He found a ___________ of keys.

问题描述:

He found a ___________ of keys.

He found a bunch of keys
字典里查到的:
a specially shaped piece of metal used for locking a door,starting a car,etc:to insert / turn the key in the lock ◆ the car keys ◆ a bunch of keys ◆ the spare key to the front door ◆ We'll have a duplicate key cut (= made).◆ There's a special key for winding up this clock.