Every effort must be ________ to prevent the ill effect the poisonous milk has ________ the the babies.
A.done; on
B.done; in
C.made; on
D.made; in
对258人提供帮助
Every effort must be ________ to prevent the ill effect the poisonous milk has ________ the the babies.
A.done; on
B.done; in
C.made; on
D.made; in
对258人提供帮助