I heard a soft _______ at the door. When I looked up, I found it was Mary. 
#6815
A
noise
B
sound
C
voice
D
cry
推荐题目
The poem is hard to understand. Can you make ___ of it?
#6449
A
idea
B
knowledge
C
sense
D
understanding
. The rocks are very big with _____ of colors on them.
#6739
A
bands
B
marks
C
rails
D
shapes
They received a number of _____ from customers about the lack of parking facilities.
#6611
A
complains
B
complaints
C
complainer
D
complainers
The   of the book makes it suitable for children.The man is considering the question as   .
#6777
A
simplicity;simplifier
B
simplicity;simplism
C
simplifier;simplism
D
simplism;simplifier