Look out! The ceiling _____ l down. 
#103658
A
is to fall
B
will fall
C
is going to fall
D
is falling
推荐题目
Normally you could stay with us, but our house ______ at the moment.
#101537
A
is decorated
B
was decorated
C
is being decorated
D
was being decorated
With more forests being destroyed, huge quantities of good earth      each year.
#102348
A
is washing away
B
is being washed away
C
are washing away
D
are being washed away