【题目】Though he has made a big fortune, he is____a happy man.

【题目】_____ in charge of two classes made Mrs．Li, head of Senior Grade 3, extremely tired．

【题目】He was about to leave ______ the telephone rang.

【题目】Little did the teacher imagine that a student good at maths _____ have failed in the exam．

【题目】 Human beings are different from animals _________ they have languages.

【题目】 Studies indicate that people are more _______ to suffer from back problems if they sit before computer screens for long hours.

【题目】We all think the book is well worth ________.

【题目】Some hard working students always keep a torch in their dormitories _____ there is a power failure．

【题目】I saw a familiar face in the crowd, but the name ______ me for the moment.

【题目】More than one doctor _____ involved in the rescue that took place after the earthquake．