短文填空，根据上下文意思填入所缺单词。

    This weekend is Tim's (nine) birthday, he asked his father to buy him new ipad. But this worries Tim's father much, can Tim use the ipad  (correct)? Will it be a good or bad present for the little boy?

    We all know that the computer is a great  (invent) in the world, it is very  (use) for people's life. It's interesting for people  watch movies or play games with ipads or computers. Now  (million) of people are using it every day.it also may be bad to young people in some ways. Some children are very  (interest) in playing games or reading books, it may hurt  (they) eyes and make their study worse. All the parents hope their children can find better ways of using it.