The old lady did not know ___________when the house caught fire.
#36740
A
how to do
B
what to do
C
how to do it
D
what to do it.
推荐题目
_____  have you been like this?
#35343
A
How often
B
How many
C
How long
D
How old
—____ do you go to school in the morning?—At 7: 30.
#42187
A
What
B
What time
C
How
D
Where