Everybody showed great respect to the old doctor, who devoted everything he had to __________ the poor conditions of the local hospital. 
#70582
A
improving
B
improve
C
to improve
D
being improved
推荐题目
  This material ______ very soft.
#81567
A
is felt
B
feels
C
has felt
D
feeling
These apples taste _____. 
#83291
A
to be good
B
good
C
to be well
D
well