49. You must go there at once because the situation prompt action.A. calls forB. calls bac

发布时间：2020-08-16 06:58:12


49. You must go there at once because the situation      prompt action.
A. calls for
B. calls back
C. calls at
D. calls on

网友回答

(答案→)A. calls for
B. calls back
C. calls at
D. calls on
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