Our class will go to the National Park next Sunday ——________ it rains, of course.
---Tom, must you have the light______ all night? It’s really a waste. ---Sorry, I won’t do it again.
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.