Doctors tell people _________ their hands often and to stay home if they feel ill.
#50765
A
to wash
B
washes
C
wash
D
washing
推荐题目
The baby stopped     and began    . 
#50542
A
to cry, laughing
B
to cry, laughed
C
crying, to laugh
D
cried, to laugh
Can you hear the girls ______in the next room?
#49585
A
sang
B
tosing
C
singing
D
sing