Elizabeth believed the dog would die if _____ to her cruel owners so she kept it.
— Have you seen ____ pencil? I left it here this morning. —Is it _____black one? I think I saw it somewhere.
---Could I use your computer for a few minutes, please? --- ________. I’m not using it myself.
It was at 10 o’clock last night __________ the visitors finally arrived at Pudong International Airport.
—How many times have you been to China? —In fact, it is the first time I __________ here.
—I missed the first part of the film. It was really a pity. —You __________ home half an hour earlier.