题目详情
单选题 --- I ______ so busily recently that I ______ no time to help you with your math. --- That's OK. I can manage it by myself
A. had been working; had had
B. have worked; had
C. have been working ; have
D. am working; will have

学科:默认课程
时间:2026-01-05 02:39:11
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