The flight to Guangzhou had to be________because of the heavy snow. 

The people in Ya'an have met lots of difficulties, but they haven't ________ hope.

– Miss Smith never wastes money on anything too expensive, even though she can ________ to.  – Yes, she does. She has given much of her money to charities.

.I __________ be afraid to sleep alone in my room, but now I _________ sleeping there alone.

---I’d like to buy a book named Confucius from the Heart.  -- Sorry, it ________ two days ago.