单项选择题
Only under special circumstances ______ to take make-up tests.
单项选择题 She had sat in the same position for several hours so that her neck and legs became ______.
单项选择题 I ______ friendship very much, because I believe that true friendship is worth more than money.
单项选择题 She thought I was talking about her son, ______, in fact, I was talking about my son.
