3 Complete the passage. Use the verbs in the correct form.
Communication 1)
(change) a lot over the past 150 years. Before
that, sending letters and telegraphs* 2)
communicate. The invention of the telephone 3)
much* easier and faster. Today, more and more people 4)
(be) the only way to
(make) communication
(own)
smartphones. If you have one, you can send a message to friends and family members
around the world within* seconds. You can even enjoy video chats with them. In fact,
smartphones are
very common*, so traditional types of communication like letters,
telegraphs, and even phone calls 5).
(become) unpopular.
telegraph 「電報」 much 「はるかに」 within 「~以内に」 chat 「おしゃべり」 common 「普及した」
