1．________ that he isn't adequate to the present job, he devotes all his spare time to studying professional skills.
A．To concern B．Concerning
C．Having concerned D．Concerned
[解析]句子的主语为 he，故用 concerned 担忧的，关心的。
[答案]D
2．________ untidily and ________ in a strange way, my brother must have appeared to the people ________ to be a silly boy.
A．Dressed; spoken; presents
B．Dressing; speaking; present
C．Dressed; speaking; present
D．Dressing; speaking; be present
[解析]dressed untidily 衣冠不整，表示状态，在句中作状语；句子的主语 my brother 与 speak 之间为主动关系，故第二空用现在分词作状语；present 作后置定语，表示“在场的”。
[答案]C
