The Small Goose Pagoda in Xi’an, one of the 22 Silk Road relics located in China, _______ back in 707 during the Tang Dynasty.
Tom tried to __________ in German.
I wonder how many years ago ___________.
He said that he would write to us but so far we ___________ from him.
__________ good exercise.
I don’t know who invented __________ telescope, but I think it is __________ most useful invention.