【简答题】They saw him grow up from (child)______.
【简答题】You learn from him/her.
【单选题】She writes ___ from time to time.
【简答题】食品中的酸主要是 __________酸 。
【单选题】In winter people usually keep flowers in their houses to them from the cold weather.
【单选题】It is better to teach a man how to fish than ____________ him fish.