Walmart,which is one of the largest American supermarket chains,________ some of its stores open 24 hours on Mondays through Saturdays.(2012·安徽)
—Jack bought a new mobile phone the other day. —______? That’s his third one in just one month.
Mum _____ to us, “Be quiet! Your sister is sleeping.”
.Don’t take too much of the medicine; it does you more harm than good if you ____.
There aren’t many seats left for the concert; you had better make sure ____ two today.
Examination compositions, together with most business letters and government reports, are the main situations ____ formal language is used.