．______Hard you may try, you can’t possibly persuade Tom to give up smoking, for he is so addicted to it.

Oct.1st, ______is our National Day, is always celebrated with singing and dancig.

Danby left a message with the professor ______ he would call again in the afternoon.

George Washington was born in 1732 in a rich family in _______ is now the state of Virginia.

_____ I accept the gift or refuse it is none of your business.

_____ we need more practice is quite clear.

There is little doubt _______our team will win the game.

George applied for the position three times ______ he finally got it.

We hadn't met for 20 years, but I recognized her_____ I saw her.

Jack had traveled six miles across the Channel___________his engine failed and was forced to land on the sea .