--Tom, you didn't e to the party last night?--I ________ but I suddenly remembered I had homework to do.A.had toB.didn'tC.was going toD.wouldn't
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C解析句意：--汤姆：你昨天晚上没来参加舞会吗？--我本打算要来的，但是我突然记起来我有作业要做。根据句意，只有C项符合题意。此题题干中的but对解题起了关键的作用。A．不得不；B．没来；D．不愿来，故选C。