问题补充:
I her, but I never could.
A. ought to help
B. must help
C. ought to have helped
D. must have helped
答案:
A. ought to help
B. must help
(答案→)C. ought to have helped
D. must have helped
解析:本题考查ought的用法。ought to + have+done表示过去应该做某事却没做。
时间:2020-05-05 22:13:27
I her, but I never could.
A. ought to help
B. must help
C. ought to have helped
D. must have helped
A. ought to help
B. must help
(答案→)C. ought to have helped
D. must have helped
解析:本题考查ought的用法。ought to + have+done表示过去应该做某事却没做。