A turning point of the continuously high housing price won’t appear suddenly because there must be a certain process _____ many factors lead to the change.
— Why was the summit (高峰会谈) held? — ______.
______ the youth ______ the rising sun, Mao Zedong expressed his great hope for the youth.
— Would you mind helping me to feed some porridge to my cat? — ______.
How did it ______ that the young guy fell off the bridge into the river?
— What do you think of Tom? — He is quite good-tempered, but I can’t ______ his bad habit of smoking.