A computer is one of thr greatest i____ in the world.
问题描述:
A computer is one of thr greatest i____ in the world.
答
inventions(意思是发明,要加s ,因为前面有one of)
A computer is one of thr greatest i____ in the world.
inventions(意思是发明,要加s ,因为前面有one of)