—Must we keep the window _______ all the time? —No, you don’t have to. 
#54465
A
opening
B
opened
C
to open
D
Open
推荐题目
Is your pen pal        Australia or Canada?
#60557
A
come from
B
from
C
comes from
D
be from
Tony used to _______ to school, but he is used to _______ to school now.
#57583
A
walk; taking a bus
B
walked; took a bus
C
walk; take a bus
D
walked; taking a bus
He left in ______ a hurry that he forgot ______ the door.
#56147
A
so; locking
B
so ; to lock
C
such; locking
D
such; to lock