When I came in the children pretended and no one even raised their eyes.A. to readB. hav

问题补充：

When I came in, the children pretended and no one even raised their eyes.

A. to read

B. have read

C. to be reading

D. to have been reading

答案：

A. to read

B. have read

(答案→)C. to be reading

D. to have been reading

解析：考查不定式用法。当不定式的动作与谓语动词同时发生或者稍后发生使用一般式；在谓语动作之前发生使用不定式的完成式，和谓语动词同时发生使用不定式的进行式。句意：当我进来的时候，孩子假装在读书，甚至没有人抬起他们的眼睛。表示不定式的倒装与谓语动词同时发生。故C正确。