If you go by ____ train, you can have quite a comfortable journey, but make sure you get ____ fast one.
His sister has recently got engaged ____ a foreign teacher, who has engaged ____ education research for years.
— Don’t be disappointed. Have another go, OK? — _______ .
— Why do you want the book so much? — ____, sir.
—_______ that he managed to get the information?— Oh, a friend of his helped him.
____ she couldn't understand was ____ fewer and fewer students showed interest in her lessons.