Whatever happens to you, you should be ______ about the future life.
He is made ______ monitor of our class.
Long ago, man used to ______ with his hands but now man is used to ______ with machines, and sometimes a robot is used to ___ instead of people.
There is no need ______ because Mr. Smith is still sleeping.
Mr Smith, _____ of the _____ speech, started to read a novel.
She thought I was praising her son, _____ as a matter of fact, I was scolding him for his bad behavior at school.