After the new technique was introduced, the factory produced________tractors in 1988 as the year before.
I would appreciate ________if you could teach me how to use the computer.
The murderer ran away from his village,trying to avoid ________by the police,but in vain.
Ancient Greeks were responsible for many of the ________in science and other fields.
My friend Martin was very sick with a strange fever;________,he could neither eat nor sleep.
She is very strict not only ________all of us,but ________all her own work.