Australia has always been a continent with few people mainly because ______.

单项选择题The word intolerable consists of ______ morphemes.

单项选择题In ______, linguists probe into the possibility of combining linguistic theories and language teaching.

单项选择题______, located at the southern end of Lake Michigan, is the second largest city in U. S.

单项选择题After The Adventures of Tom Sawyer, Twain gives a literary independence to Tom's buddy Huck in a book entitled ______.

单项选择题Dr. Faustus is a play based on the German legend of a magician aspiring for ______ and finally meeting his tragic end as a result of selling his soul to the Devil.