I smell something ____ in the kitchen. Can I call you back in a minute?
You have done wrong to Jack, you should say sorry to him.
“ I ______ asleep all afternoon, so I didn’t hear the phone,” he ____ to me.
It is usually warm in my hometown in March, but it _____ be rather cold sometimes.
---Who is the girl standing over there?---Well, if you _______ know, her name is Mabel.
He asked me for this book many times. Please tell him he ______ get it tomorrow.