Put down your reading material

What does ‘put your nose down’ mean in the speech?

It is a gripping story and one can’t put it down ________ one has finished reading it.

A、after
B、when
C、unless
D、until

I ______________ you take down and put under your seat.

A、order
B、suggest
C、require
D、ask

Where should you put your napkin when you sit down?

A、

under the plate

on the table

on the plate

on the lap