—Mama, why can’t I work the math problem out?—Oh, let me see. Well, you a figure here. Got it?
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 ____.