I don’t like people ______ talk much but do little.

Although they were tired, they still went on _____.

There are many people over there. What to the old man?— Sorry, I don’t know.

I can see a bird _____ the tree.[ ]

Do you know the man ________ visited the United States in February? –Yes. He is Chinese Vice-President Xi Jinping. He said it was his _______ visit to the United States.