The boy was so tired that he fell asleep
题型:选择题
问题:
The boy was so tired that he fell asleep ________ his mother could take off his clothes.[ ]
A. before
B. after
C. while
D. when
The boy was so tired that he fell asleep ________ his mother could take off his clothes.[ ]
A. before
B. after
C. while
D. when