It is the day October 1st, 1949 _____ the People’s Republic of China was founded _____ we’ll never forget.
He went there, _____ some books and call on an old friend of his.
It is the first time that you have come to China, _____?
Through English we will be able to communicate _____ part of the world we come from.
She looks quite young _____ her age.
Whether by accident or _______, he arrived too late to help us.