When you learn English, you have to choose which accent to _____, American or British.
After graduation from college, he began to wander from city to city, _______ a suitable job.
______ in thought, he almost knocked into the car before him.
He was no longer _______ by the news of his mother’s death.
The most important thing _____we should pay attention to is the first thing ____ I’ve said.
No matter how frequently ______, the works of Beethoven still attract people all over the world.