__ _in a heavy traffic jam in a taxi while you are hurrying to the airport is quite a unpleasant experience.
—Why didn’t you put your cellphone in your overcoat pocket?—I ________, but I was afraid it would be stolen.
—Is there a fog in the evening ?—There________be . I’ll make a phone call to find it out .
“Look at these tracks. It _______ be a wolf.” “Don’t be so sure. I think it _______ be a fox.”
“Show me your permit, please.” “Oh, it’s not in my pocket. It ______.”
“Is there a flight to London this evening?” “There _______ be. I’ll phone the airport and find it out.”