(2014·山西省六所重点中学模拟)—Believe it or not，my sister and I are twins.—Oh，you must have had the case________you were taken for your sister.

We can’t have lunch at the restaurant, because ________[ ]

Every evening M r King takes a _________to his home

One can’t be successful ________ he or she keeps working hard.—I agree with you.

Running a company is not________a matter of hiring people-they also need to be trained[ ]