— Why do you always go to Lanzhou University on weekends?— Because there’re lots of great speakers I can practice English ________ in the English Corner there.
I still remembered we arrived _______ that small village _______ a clear night.
— Everyone knows Canada is the second _______ country in the world. — That is, it is larger than _______ country in Asia.
— Excuse me, _______ is it from here to the World Park? — About half an hour by underground.
Amy is glad to help others _______, so we often ask her for help.
We can choose any book _______ in the library _______ the Reading Week.