David woke up one morning to find both water and electricity _______ because he hadn't paid the bills.
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.
If you don’t keep the meat in the refrigerator on such a hot day, it may ____.