. From: Twitter
A. What are you ______ at?
B. Nothing.
A. Really? What's so funny, then?
B. What makes you think I was _______ at you?
A. You were looking right at me.
B. Was I?
A. Yes. So at what then?
B. The spider on your shirt!
A. Aah!
a. thinking
b. laughing
c. looking
d. staring
日本語訳
Twitterより。A「何を見て笑っているの？」。B「何でもないよ」。A「じゃあ何がおかしいの？」。B「私があなたを笑っていたと思うの？」。A「こっちを見ていたじゃない」。B「あなたのシャツについているクモだよ！」。thinking / laughing / looking / staring から選んでください。
The answers are
b. laughing for the first and third statements
The reason is clear if we look at the third statement (a question): ”What's so funny?'
Culture:
Be careful. When a native-speaker asks "what's so funny?" be sure to look at his or her face. Does he or she look angry? 'What's so funny?' is not always a light, rhetorical question; it could be a challenge coming from his or her perception that you are laughing at him or her. If you hear, 'Ill give you something to laugh about', a fight could be coming.
解答・解説の日本語訳
答えは laughing。What's so funny?（何がおかしいの？）という台詞が手掛かりです。文化上の注意として、What’s so funny? は軽い質問とは限りません。怒った顔で言われたなら「私を笑っているのか」という抗議かもしれません。I'll give you something to laugh about. も、けんかになりかねない強い言い方です。原文の「最初と三番目の発言」という解答の位置づけには確認の余地があります。