There are some health problems that, whe
题型:选择题
问题:
There are some health problems that, when _____ in time, can become bigger ones later on.
A.not treated
B.not being treated
C.not to be treated
D.not having been treated
There are some health problems that, when _____ in time, can become bigger ones later on.
A.not treated
B.not being treated
C.not to be treated
D.not having been treated