题目内容
—Tom, you look tired this morning. What’s wrong?
—I was so busy that I didn’t go to bed________12 o’clock last night.
—I was so busy that I didn’t go to bed________12 o’clock last night.
A.until | B.when | C.though | D.unless |
A
本题符合not···until的结构,表示直到···才,故选答案为A
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