(2013·高考浙江卷)The children，________ had played the whole day long，were worn out.

(2013·河北教学质检)After a year, doctors diagnosed him with a disease so rare ________ it affects just one in 8 million children

My father likes reading. There ________ many books on his desk.

It was ______ back home from the restaurant________ he stayed for a whole day.

_______ there are many different types of food, some animals spend their lives eating only one type.