They were their teacher everywhere. At last they him at the library.

Xi’an was the last city ______ he visited in China.

That’s the third time he’s won the award in this field.— Yes. He ______ his maximum potential in the past decade.

It was _____back home after the experiments.

It’s December 19th tomorrow. Ted will go back to the States on December 20th You mean， he’s going back______