“Thank you.”is a polite _______ (express)which is widely used in English.
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Though he didn'twin any medals in the last sports meet, he was not ____ (courage).
I wrote him a letter to show my______ (appreciate) of his thoughtfulness.
The first tomb was built at the______ (begin) of the 15th century.
Ỉd just like to ______ (emphasis) how important it is for people to learn foreignlanguage.