The familiar English song ______ me of the happy days I spent in the primary school.

 –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.

This is the factory           his father worked last year.

Many tourists ____ once considered visiting Malaysia don’t want go there after the disappearance of Flight MH370.

I can’t forget the time _______ the earthquake happened in Yushu.