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
The Swimming Club            twenty members. 
#42226
A
consists of
B
makes up of
C
contains
D
Includes
—Whose T-shirt is this?—It   be John’s. It’s      small for him.
#43399
A
can’t; much too
B
can’t; too much
C
mustn’t; much too
D
mustn’t; too much
 I ______ an hour finishing my homework yesterday.
#42451
A
cost
B
paid
C
spent
D
took