A person who studies the stars and planets is called:

One who cannot read or write is called:

A shelter for birds is called:

A person who loves books is called:

One who is not easily discouraged is called:

Fill in the blank: I have been living here ____ 2015.

A person who speaks many languages is called:

Choose the correct preposition: The train arrived ____ time.

Government by the people is called:

Fill in the blank: He is one of the students who ____ always late.

What does the idiom 'Burn the midnight oil' mean?