— OK. I ______________.

— He is cleaning his office.

— ______________. I'm checking my email.

    Recently, many people have begun to try a new way of doing shopping through the Internet. They are interested1it. Why is it becoming more and more popular now? There are some2. First, more and more people have their own mobile phones and their mobile phones can be joined with the Internet.3it is possible for many of them to do shopping through the Internet. Second, shop- ping through the Internet can save them some money and4time. Third, they don't need to go to the5themselves. Because of these good facts, few people refuse it.

    On the other hand, some people don't like this new way of shopping. They are6about the safety of shopping online. Customers can only7the pictures of a product on the Internet. And they can't enjoy the pleasure of getting things at once. These are the reasons why they do not like it.

    But I think more and more people8this new kind of shopping in the future.