There are millions of websites on the Internet and there_______ a lot of useful _______on the websites.

Look! Two ______ are playing basketball on the playground(操场).   

 Some accidents have happened on the road recently. So we should pay attention to the __________ problems.

 ---What’s the matter?---Something is wrong with my _______. I can’t see clearly.

 In the small zoo, there is a _______ elephant.