When the sick mother got up, she was surprised to find that her six-year-old daughter _______ in the kitchen.
I regret ______ you that you have not been chosen for the performance.
—Waiter, ______ ?—Sure. Here’s your bill.
The number of the students ______ this year’s entrance exam is 650,000 less than last year.
. It ______ last night ______ Tom saw an interesting film in Dongfeng Cinema.
. Only when class began ______that he had left his book at home.