When he came in, I happened on the bed .
A. lying; and read
B. to lie; reading
C. to be lying; reading
D. to have lain; reading
网友回答
A. lying; and read
B. to lie; reading
(答案→)C. to be lying; reading
D. to have lain; reading
解析：本题考查非谓语动词。happen to碰巧。动词不定式进行式表示动作正在进行，与谓语动词表示的动作同时发生。句意：他进来的时候，我碰巧正躺在床上看书。