—Could you ride a bike when you were 5 years old?—_____
Usually, it’s easier to make decision than to take action.
My parents want me to get further study to be _____ an engineer ____ a scientist, ____ I would like to be a famous surgeon doctor.
The railwayQinghai to Tibet is the longest plateau (高原) railway in the world.
I find ____ useful _____ English well.
We may meet all kinds of difficulties in the future, but we should be confident enough to any challenge.