1．The workers pretended________hard at their machines when the boss came in.
A．to work B．working C．to be working D．to have worked
解析：句意：“当老板进来时，那些工人们都假装在机器旁认真工作。”pretend跟动词不定式作宾语，根据语境答案是C。“装模作样地正努力干活。”B.不合语法，A.表即将工作，D.已完成，均不合语意。
答案：C
2．He has ________ changed after that although he still lives a simple life.
A．much greatly B．more and less C．more or less D．much more
解析：考查短语搭配。根据题意“尽管他仍然过着简朴的生活，自那以后他多多少少变化了些。”用more or less表达“或多或少”之意。
答案：C
