题干
– Did Alan enjoy seeing his old friend yesterday?
-- Yes, he did. He ______ his old friend for a long time.
-- Yes, he did. He ______ his old friend for a long time.
A：didn’t see
B：hadn’t see
C：hasn’t see
D：wouldn’t see
答案(点此获取答案解析）
B
的图象如图所示，
是图象上的一点，且
，则
的值为: 