问题
选择题
You will be late ______ you leave immediately.
A．unless
B．until
C．if
D．or
答案
答案：A
unless 除非；until 到…为止。
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You will be late ______ you leave immediately.
A．unless
B．until
C．if
D．or
答案：A
unless 除非；until 到…为止。
