Điền từ thích hợp vào chỗ trống

1/ You will have to put ______ your holiday if you are too ill to travel
2/ Toefl ......... the test of english as a foreign language
3/ Lack __ internet acess is costing the next generation their future
4/ You can watch the train going __ from this window
5/ No sooner had the announcement _____made than everyone started complaining
6/ Don't miss out __ a visit to ha long bay