I()my homework at seven o`clockI ()my homework at seven o`clock A finished B have finished

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I()my homework at seven o`clockI ()my homework at seven o`clock A finished B have finished
I()my homework at seven o`clock
I ()my homework at seven o`clock A finished B have finished

I()my homework at seven o`clockI ()my homework at seven o`clock A finished B have finished
这句是一般过去时,应该选择a,finished