问题
选择题
—Please wait here. I'll come back soon.
—All right. We won't leave you come back. [ ]
A. since
B. until
C. while
D. as
答案
答案：B
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—Please wait here. I'll come back soon.
—All right. We won't leave you come back. [ ]
A. since
B. until
C. while
D. as
答案：B