A.选用方框内所给词的适当形式填空，词限用一次。

He has been         (collect) coins for 2 years
The population of China is the        (large) in the world
My grandma got a special gift on her        (ninety) birthday yesterday
These days many         (foreign) from all over the world go to visit San ya
Dropping litter is almost never         (allow)
B、根据句意及词首字母或汉语提示，补全单词。
May I have a s        ? I want to post a letter
We are not         (应该) to play football in the street
Milk is wearing a new pair of         (牛仔裤)
Talk loudly in a library，a museum，or a movie theater is
i       
The children are old enough to look after t      .