It is on 1st Sept. ________ students go back to school every year.
. It is believed that this book is ______worth reading than that one.
Two middle-aged passengers fell into the sea. _______, neither of them could swim.
It was last night _______ I read about the history of English.
They found the remains of buildings _______ under the sand, together with a lot of treasures.
It is not Tom but you who _______ to blame for the accident.