She raised her finger to her lips as _____ for silence. 
#7314
A
an idea
B
a mark
C
a sign
D
a word
推荐题目
She bought the painting at a much higher______ than its real_______.
#6850
A
value, price
B
price, value
C
value, value
D
price, price
The old man gave ______ on behalf of an accused person.
#6144
A
word
B
money
C
proof
D
witness.