Although medical science __________ control over several diseases,what worries us is that some of them are returning.
I wanted to have the paperby the end of this month.
I will answer the teacher’s question when _______.
She decided to apply _____ the boss _____ the new position .
The number of people invited to the party 200 but a number of them ___absent for different reasons.
The boy was put into the prison for of stealing a lot of knives.