-I’ll be back at 4:30. Will you still be here? -I’m afraid not. I’ll probably ha
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—I’ll be back at 4:30. Will youstill be here?
—I’m afraid not. I’ll probably havegone out __________then.
A. by B.since
C. from D.till
试题答案
答案:A
提示:by then常与将来完成时连用。
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