_______ is necessary for you to lock the car when you don’t use it.
He couldn’t ______ the fact that the money was found in his house.
She ______have stopped her work halfway.
—Have you heard the story of “The Merchant of Venice”? —No. When and where does the story ______ ?
The reason for his success is ______ he worked very hard.
She ______to them about her age in order to get the job.