单项选择题
Now, she is upstairs ______ a long speech for the president.
单项选择题 ______ changed: whatever men can do, women can also do.
单项选择题 The middle-aged lady surrounded by the masses is said ______ a ______.
单项选择题 --How delicious the fish is! --but I don't think it ______ what I cooked yesterday.