问题

he old man told us most of the story,but _______ the part about the murder.

A:kept up
B:kept back
C:kept out
D:kept down

正确答案是：

同类题型

Nuclear science should be developed to guard peace ____ destroy the world.

Must I return the book now— I’m afraid you ________ according to the library rules. But you can renew it.

The tiger, once a animal to humans, is now of disappearing on the earth.

Which of the two T-shirts will you take—I’ll take _______. One is for my brother, the other is for myself.

Those who have ________ floods and sandstorms know the importance of environmental protection.