the red switch on the left and the flying machine will swiftly go up into the air and its journey.
Where did you get to know her?—-It was on the farm______ we worked.
Nanjing,______ capital of Jiangsu, is a beautiful city with____ long history.
Sandy wants to buy the same football cards _____ his brother did. [ ]
Was a car invented _____ March 4, 1876? [ ]