Our head teacher always ________ (鼓励) us to solve problems by ourselves.
There is a train in now. If you run, you'll just ________ (赶上) it.
The job was so ________ (枯燥) that the young man finally left.
The students studying abroad had to make a c________ whether to return or to stay.
We are all p________ of the achievements we've made in the past 70 years.
With the teachers' help, he has made great p________ in his studies.
