Young people nowadays could not imagine what difficulty their fathers had ______ for a better life for their children.

(单选题)According to the passage, what do we know from Stefan’s stor (单选题)What can we learn from the research of the doctoral students (单选题)What does the underlined word “hone” mean in paragraph 4? (单选题)According to the passage, which of the following condition p (单选题)What is the characteristic of five-color silk string? (单选题)What’s the main idea of the passage under subtitle “Hanging (单选题)What could we learn from the passage related “eating zongzi” (单选题)Why did Chu people throw rice dumplings into the river? (单选题)What do we know about China’s Dragon Boat Festival? (单选题)（ ）