1-C. Well, it's hard to decide.Well, it's hard to decide.
まあ、(形式主語:それは)、難しいです、決めるのはダヨ。
2-C. Let's talk about where we'd go if we could take a 3-week trip anywhere in the world.Let's talk about where we'd go if we could take a 3-week trip anywhere in the world.
3-C. Ken's dream had come true.Ken's dream had come true.
ケンの夢は、本当に成りました。
4-C. M: So, what's our afternoon plan?M: So, what's our afternoon plan?
M:それで、何ですか、私たちの午後の計画は?
5-C. M: That's a great idea.M: That's a great idea.
M:それは、素晴らしいアイデアです。
6-C. W: Have you heard about Nancy's farewell party?W: Have you heard about Nancy's farewell party?
W:あなたは、聞いたことがありますか、ナンシーの送別会についてダヨ?
7-C. (1) No, it's hard.(1) No, it's hard.
(1)いいえ、それは難しいです。
8-C. (2) Oh, that's very nice of you.(2) Oh, that's very nice of you.
(2)ああ、それは、非常にすてきなところです、あなたのダヨ。
9-C. (2) He's funny.(2) He's funny.
(2)彼は面白いです。
10-C. (4) So Let's hurry up.(4) So Let's hurry up.
(4)それでは、急ぎましょう。
sing[動詞]歌う
11-C. Accepting an invitation to sing karaoke on a night when you planned to start working on a presentation could be one example.Accepting an invitation to sing karaoke on a night when you planned to start working on a presentation could be one example.