I won't believe that the five-year-old boy can read magazines ________ I test him myself.
问题描述：
I won't believe that the five-year-old boy can read magazines ________ I test him myself.
A if
B when
C after
D until
答
D
not...until...直到……才……
参考译文：我要亲自测验了这个五岁的小男孩后,我才会相信他能看得懂杂志.
不明白的再问哟,请及时采纳,多谢!