There were two teachers named John ________at our school, which made some of our students ________. 

 — What do you think of the book? — Oh, excellent. It is worth __________ second time.

________in the heart of Toronto is the Canadian National Tower , which is often called the CN Tower for short.

With the help of the soldiers, many people ______ in the ruins were saved.

All students are requested to be present at the meeting ______ in the school auditorium at 1:30 pm.

_______with his graduation design, he has been working in the library for a week.

The government held a special meeting，________ people to contribute more to the victims.

 --Why do you have a _______ look? --Because you almost _______ me out of life by your _______ mask.

The old man needs a        ___________stick _________more steadily.

.The detective, ______to read a newspaper, glanced at the man ______next to a woman.

It was so cold that they kept the fire ______ all night.

Many children prefer_________games on the computer rather than________outside.

. __________ in Hangzhou station for two hours, the old man eventually caught the last train to go back to his home in Huangyan.

The old man was found _______ on the floor _______.

      by the beauty of the countryside, the old couple decided to stay another week on the farm.

When _______ there, the postman found the door locked and then stopped _______ the letter in the mailbox on the wall.

Li Rong told me what difficulties she had had  ______ English before she came to Canada.

—How about your vocation?—Great. You know what? I find travelling with my family really________.

.When _____ if he had seen her, Mattew just shook his head.

.A small plane crashed into a hillside five miles to the east of the city, _____ all on board.