From Twitter
Choose:
A. Are you __?
B. Yes. C'mon, give me my sandwich and let me pay.
A. Is it __?
B. If it were an emergency would I be buying a sandwich? I have __; I'm meeting my mother-in-law; if I'm late, I die.
A. Then, hurry!
a. an emergency
b. to hurry
c. in a rush

日本語訳
Twitterより。サンドイッチを買う客と店員の会話です。店員「急いでいますか」。客「ええ。サンドイッチを渡して、お金を払わせてください」。店員「緊急事態ですか」。客「緊急ならサンドイッチを買っていると思いますか。義母に会うので急がなければ。遅れたら大変です」。in a rush / an emergency / to hurry などの表現を空欄に入れます。
The Answers are:
'in a rush' (c)
'an emergency' (a)
'to hurry' (b)
Explanation:
The first answer can only be 'in a hurry':
'Are you in a hurry?' ... because we wouldn't say: 'are you to hurry?' or 'are you an emergency?' These expressions do not make sense.
The second answer is easy, because the question begins with 'is it', so we know a noun is needed and 'is it in a rush' doesn't make sense, because it refers to something that has not been spoken about; so the only answer is the other noun, 'an emergency’.
The Third answer must then be (b) 'I have to hurry.' Not only is it the only answer remaining, but we can't say 'I have in a hurry.' We could say: 'I have an emergency', but this situation is not an emergency; emergencies are about physical danger or about having to go to the bathroom in a hurry.
解答・解説の日本語訳
「Are you __?」には in a rush / in a hurry、「Is it __?」には an emergency、「I have __」には to hurry を入れます。最初は「あなた自身が急いでいるか」、次は「事態が緊急か」、最後は「急がなければならない」という意味です。原文の選択肢と説明で in a rush と in a hurry の表記が食い違っているため、英語の正解欄を変更せず、編集上の確認事項として残します。