He did not write _________,though(尽管)he had______ ­­­­­­­­­­­。

When did you buy this computer? It looks so new.— I it for only a couple of days. My sister bought it for me as a birthday present.

He likes to play ____ football, but I like to play _____ piano.

I can’t find the bookstore _____ my father bought the book for me yesterday.

They found ­_______very hard to move the stone.