摘要： I her, but I never could. A. ought to help B. must help C. must have helped D. ought to have helped
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I ______ her, but I never could.
[ ]
A. ought to help
B. must help
C. must have helped
D. ought to have helped
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B. must help
C. must have helped
D. ought to have helped
I ______ her, but I never could.
A. ought to help B. must help C. must have helped D. ought to have helped
查看习题详情和答案>>I ______ her, but I never could.
A. ought to help B. must help C. must have helped D. ought to have helped
查看习题详情和答案>>