We must be strict ________ ourselves.
I think so.( )
with
on
in
by
Anna is preparing for the coming exam, so she has to ____ the invitation to the party.( )
A.turn onB.turn downC.turn offD.turn up
____ have you talked with your friends on the phone?
Since I finished my homework.( )
A.How farB.How oftenC.How soonD.How long
Oh, dear! I can't find my key to the office.
Don't worry. I think you might ________ it in your car.( )
A.offerB.forgetC.borrowD.leave
Jerry will succeed in working out the problem ____ he gives up.( )
A.IfB.becauseC.soD.unless
We will have a sports meeting in October, but ______knows the date for sure.( )
A.everybodyB.nobodyC.anybodyD.somebody