John: _________Jack: In two weeks.John: Are you going to Japan?Jack: No. I’m going to Australia. I went to Japan two years ago.

In this country it is required that anyone who wants to settle here ______ to pass this kind of test.

Do you know why the river was polluted? — Many different factors ___________ the serious pollution of the river.

Have you ever seen anything like thatbefore—- ____

______interesting work it is to teach children!