单项选择题—How much vinegar did you put in the soup —I'm sorry to say, ______. I forget.
单项选择题Take this medicine, ______ you will be getting worse.
单项选择题—Did Alan enjoy seeing his old friends yesterday —Yes, he did. He ______ his old friends for a long time.
单项选择题He is only too ready to help others, seldom, ______ , refusing them when they turn to him.
单项选择题The seaside here draws a lot of tourists every summer. Warm sunshine and soft sands make ______ it is.