Which is the answer?
1.—I don't suppose Jimmy could have done well in the mid-term exam last week, ______?
—______, he almost failed in the exam.
A. hasn't he; Yes B. did he; No C. do I; Yes D. could he; No
2.—I called him twice and I couldn't get through to him.
—The line might have been out of order, ______?
A. mightn't it B. hadn't it C. wasn't it D. haven't it