I can’t find Xiao Ping, where did you see him this morning?—It was in the library______ he studied．

Johnson, come and have a look at thesea! It is beautiful, isn’t it— Ifonly I lived here by the sea.

I have accepted that project, though it is full of risk.—________! Young people should dare to shoulder responsibilities.

“Professor Wang is at work in ________office” Miss Brown said in ________ low voice

下列各项中加点字活用方式相同的一组是（ ）