She can't help _____ the house because she's busy making a cake.
#94713
A
to clean
B
cleaning
C
cleaned
D
being cleaned
推荐题目
You should do the things worth ____, and if you have difficulty _____ them, you can turn to your family.
#92509
A
doing; doing
B
doing; to do
C
being done; to do
D
being done; doing
Thanks to the computer, I got several times _______ information _______ they did. 
#92005
A
as more; as
B
as much; than
C
as much; as
D
as many; as
At first, my new surroundings were difficult _________
#92147
A
to be tolerated
B
tolerating
C
to tolerate
D
being tolerated
Leonardo da Vinci ________ birds kept in cages in order to have the pleasure of setting them free.
#95003
A
is said to be buying
B
is said to have bought
C
had said to buy
D
has said to have bought