Hello. What happened? Didn.t you catch your train? -- If I it I here , should I?(本题1.0分) A、 A.had caught , shouldn.t have been B、 had caught , shouldn.t be C、 caught , shouldn. t be D、 catch , am not

Hello. What happened? Didn.t you catch your train? -- If I it I here , should I?(本题1.0分)
A、 A.had caught , shouldn.t have been
B、 had caught , shouldn.t be
C、 caught , shouldn. t be
D、 catch , am not

出自：信阳师范学院当代英语语法概论

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