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
Only____________ of the food__________ bad. You needn’t throw all away.
#43671
A
two ninth, have gone
B
two ninths, have gone
C
two ninths, has gone
D
two ninth, has been
 What have you got _____ will help a cold? 
#86233
A
what
B
that
C
it
D
who