1. An underlying assumption of most market research is that people are continually ____ financial decisions based on their desire for goods that give them the most satisfaction. (A) making (B) and make (C) being made (D) having made 2. ____ tempera paint, the artist mixes dry pigments with water until the mixture resembles a stiff paste. (A) In preparation (B) The preparing of (C) To prepare (D) Prepared 3. When two straight lines meet, ____ an angle. (A) it is formed (B) formed (C) they form (D) to form 4. ____ the precise qualities of the hero in literary works may vary over time, the basic exemplary function of the hero seems to remain constant. (A) Whatever (B) Even though (C) In spite of (D) Regardless 5. Early forms of life on Earth, ____ in the absence of oxygen, required elements such as sulfur instead. (A) which lived (B) whose life (C) lived (D) were living 答案解析： 1. (A) making, people are continuously making ...构成句子的谓语 2. (C) To prepare，动词不定式做目的状语。 3. (C) they form,前面的时间状语从句就决定了后面应该是一个完整的主句，要有主语和谓语。 4. (B) Even though，单句和单句之间是转折的关系，所以用even though来连接。 5. (A) which lived，构成定语从句，相当于living。