教えてください…！
次の英文の不定詞の用法と同じものを記号で答えなさい。
(1)I have many things to do today.
(2)It is a lot of fun to learn a foreign language . (3)Smartphone is easy to carry and very convenient.
(4)When you are sick, you need a friend to talk to.
(5)My brother likes to use a computer.
ア.My hobby is to play the piano.
イ.There are many beautiful places to see in Japan.
ウ. I studied hard to pass the test.
