He has lost his pen. He is _______ it everywhere.
A．looking after B．looking out
C．look like D．looking for
My mother told me _______ junk food at school.
A．to not eat B．not to eat
C．don't eat D．didn't
There 's a teacher _____ with your parents in the teachers' office.
A．is talking B．talks C．to talk D．talking
That computer_____ me quite a lot of money.
A．spent B．cost C．took D．paid
I never forget the days when I enjoyed ______ a good time in Beijing.
A．have B．to have C．had D．having
We shall never give up ______ for even one day.
A．studying B．study C．to study D．studies
