The key you have just got     the front door. 
#102563
A
is used to opening
B
is used to be opened
C
is used to being opened
D
is used to open
推荐题目
My grandma_____in the country. Now she   in the city.
#103897
A
used to live, lives
B
used to living, lived
C
uses to live, is living
D
was used to live, lives
—Who do you guess I am?—Sorry, your name       my mind.
#100675
A
slipped
B
has slipped
C
was slipped
D
slips