Heruncle′shealthhasgreatlyimproved______hestoppedsmoking.
2023-11-03教师招聘 (中学)
Heruncle′shealthhasgreatlyimproved______hestoppedsmoking.
A.before
B.since
C.when
D.while
正确答案是B

Heruncle′shealthhasgreatlyimproved______hestoppedsmoking.
A.before
B.since
C.when
D.while
正确答案是B