Sam_______ some knowledge of the computer just by watching others working on it..
—Come on,please give me some ideas about the project.—Sorry.With so much work __________ my mind,I almost break down.
Mr.Jones,__________ as a famous writer,is popular with his readers.
__________you’ve passed the test,you can drive a car on your own.But you still should be careful.
The young man is one of the few who __________ the plane crash.
Though he has to __________ a hard time,he still holds a positive attitude towards life.