那两个字母代表什么？
____________________
— What is a ________?
— It's a page or series of pages showing the days, weeks and months of a particular year, especially one that you hang on a wall.
—Philip, how can I improve my spoken English quickly?
—I ________you listen more and read more. That can improve your pronunciation and intonation.
— This scientist is great enough to devote most of her lifetime to the medical research.
— That's why she was spoken ________of and presented with the national medal.
— What's the last line of the poem Song of the Great Wind?
— It's Where can I find brave men, oh! To ________ (守卫) my four frontiers today!
Einstein was forced to move to the USA in 1933 because of World War II and later became a ________ (德国的) American.
