He failed the mid-term examination and only then________how much time he had wasted.
—It’s only ten minutes’ walk; I could have got there on foot. — Yes. A taxi _______ not at all necessary.
It was about 5 o’clock in the afternoon _______ they had their supper.
His suggestion made me angry, but _______.
_______ that he might lose his job, Peter always works extra hours to please his boss.
— I haven’t finished my task yet. — You shouldn’t have watched the film last night, or you _______ it by now.A, need have finished B. may have finishedC. should have finished D. will have finished