题目内容
The student began to answer it ________ the teacher could finish his question.
[ ]
A.until
B.when
C.unless
D.before
答案:D
提示:
提示:
before译为“尚未”. |
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题目内容
The student began to answer it ________ the teacher could finish his question.
[ ]
before译为“尚未”. |