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
Paul made a nice cage _______the little sick bird till it could fly．
#42816
A
keep
B
kept
C
keeping
D
to keep
---_____ have you studied English? --- Since I was six.
#43522
A
How often
B
When
C
How long
D
What time
--- Mum,_______ of the apples ______ gone bad.---- We'd better eat up the as soon as possible.
#35848
A
one third;have
B
one thirds; have
C
one third;has
D
first three ;has