After his operation, the old man was bac
题型:选择题
问题:
After his operation, the old man was back ______ and he began to take exercise as usual.
A.at his feet
B.to his feet
C.in his feet
D.on his feet
After his operation, the old man was back ______ and he began to take exercise as usual.
A.at his feet
B.to his feet
C.in his feet
D.on his feet