As students, we have many duties to perform, with improving our ability to learn _______.
______ in the sandstorm, he didn’t know which way to take.
He joined the firm as an office boy, but he gained rapid promotion, and _____ a director.
Leaders of many countries have been trying to ______ what it is that makes China develop so fast.
---Can you shoot the bird at the top of the tree? ---No, it’s out of ______.
The manager discussed the plan that they would like to see ______ the next year.