Some pre-school children go to a day-car
题型:选择题
问题:
Some pre-school children go to a day-care center, __________ they learn simple games and songs.
A.then
B.there
C.while
D.where
Some pre-school children go to a day-care center, __________ they learn simple games and songs.
A.then
B.there
C.while
D.where