We Chinese are proud ______ the great success ______ the area of science and technology .[ ]

. Intelligence is to some extent _____ oneis born with

Look at your hands, John. ______ of them isclean.—OK, I’ll wash them at once.

ProfessorWilliams keeps telling his students that the future tothe well-educated

It’s not polite to enter the other’s room ________ knocking on the door.