The little boy won't go to sleep his mother tells him a story. [ ]A. orB. unless
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The little boy won't go to sleep _____ his mother tells him a story. [ ]A. or
B. unless
C. but
D. whether
试题答案
B
The little boy won't go to sleep _____ his mother tells him a story. [ ]A. or
B. unless
C. but
D. whether
B