问题
选择题
—Where was your brother at this time last night?
—He was writing an e-mail _______ I was watching TV at home. [ ]
A. as soon as
B. after
C. until
D. while
答案
答案：D
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—Where was your brother at this time last night?
—He was writing an e-mail _______ I was watching TV at home. [ ]
A. as soon as
B. after
C. until
D. while
答案：D