—Have you ever been to Shanghai Expo Garden?—No.It is the first time that I________to China.
Finally they arrived at a place ________ sold cigarettes and other small articles.
When _______ America and Britain, this famous writer said that the same language _____ the two people.
All the elder people ______ at the party were those _____involved in (参与)community service.
In the past, ice used to ______ used to ______ the air in a room.
The old man’s _______ pity on the snake led to his own death.