He looked through the pages of advertisements to find jobs ______ to college students during the summer holidays.

A．taken in
B．taken up
C．taken off
D．taken over

A．must be made of
B．should be made of
C．will be made of
D．would be made of

A．Be not sure to touch it
B．Be sure not to touch it
C．Be sure to not touch it
D．Don't be sure to touch it