4．--We're doing a lot to protect our environment.but it is not good enough．--So we should try ——青夏教育精英家教网——

4．--We're doing a lot to protect our environment，but it is not good enough．
--So we should try ______ to look after it．（　　）

3．The doctor told me to eat more _______ because it's good for my health．（　　）

2．I'm now in New York with my friend Jenny．We ______ by plane on Monday．（　　）

1．Harriet is lost and her parents are really _______ her．（　　）

20．Mary isn't here at the moment．She _______ later．（　　）

19．The work is too hard for him．He _______ finish it on time．（　　）

18．--Where did you go for your winter vacation？
--My family went to Paris．________ had a great time．（　　）

17．I hated my new school at first，but I made lots of friends and now I _________ it．（　　）

16．I can't eat any more food，I am_________________．（　　）

15．Come on，_________________ you'll be late．（　　）

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