By       local doctors and nurses, we hope        more people.
#51014
A
train, help
B
training, helping
C
training, to help
D
train, helping
推荐题目
I’m going to ask Sam _________ the flat.
#49500
A
clean
B
cleans
C
cleaning
D
to clean
The baby stopped     and began    . 
#50542
A
to cry, laughing
B
to cry, laughed
C
crying, to laugh
D
cried, to laugh
--- It’s too hot. Would you mind _____ the door?  --- ______. Please do it now. 
#50610
A
to open ; OK
B
to open ; Good idea
C
opening ; Of course
D
opening ; Certainly not