I have to go at once.
2023-07-03
A:soon
B:immediately
C:now
D:early
参考答案：B
B:immediately
C:now
D:early
参考答案：B
at once：马上。immediately：马上，例如：It's getting late.We must go back home immediately．越来越晚了，我们得马上回家。soon：很快，例如：We'll have lunch soon．我们很快就要吃午饭了。now：现在，例如：If we leave now we'll be there before dark．如果我们现在就离开，我们在天黑前就会到那里了。early：早，例如：Mary gets up very early．玛丽起得很早。选项B与题干中at once的含义相近，故答案为B。
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