Tony has much difficulty ______Chinese , so he often asks me for help . 
#43861
A
understand
B
understands
C
understanding
D
to understand
推荐题目
Every means _____ prevent the water from _____.
#85804
A
are used to; polluting
B
will be used to; polluting
C
is used to; polluted
D
is used to; being polluted
. No teacher and no student  ______.
#86063
A
are admitted
B
is admitted
C
are admitting
D
is admitting
All possible means       to save the wounded soldier.
#86247
A
has been tried
B
have been tried
C
is to be tried
D
are trying
Mother, together with her children , ______ to the hospital.
#85798
A
were sent
B
are sent
C
was sent
D
have been sent