问题补充：
One day I was dining with my friend Zhou in McDonald when two young girls came in hand in hand. While enjoyed a hamburger, I found Zhou looking around at something strangely.
I raised my eyes to see what was happening. The two girls are making gestures skillfully. Obviously they were deaf-mutes. I had learned some sign languages ago, so I showed various gestures with Zhou following me in low spirits. We played and laughed cheerfully as if there had no one else present. Suddenly we saw both the two girls glaring at us. Before we could explain to them, they had walked out angrily, left the food unfinished. They thought we were making joke of them. How I regretted!
One day I was dining with my friend Zhou in ∧ McDonald when two young girls came in
a
hand in hand. While enjoyed a hamburger, I found Zhou looking around at something strangely.
enjoying strange
I raised my eyes to see what was happening. The two girls are making gestures skillfully.
were
Obviously they were deaf-mutes. I had learned some sign languages ago, so I showed various
before
gestures with Zhou following me in low spirits. We played and laughed cheerfully as if there had
high
∧ no one else present. Suddenly we saw both the two girls glaring at us. Before we could
been或去掉two
explain to them, they had walked out angrily, left the food unfinished. They thought we were
leaving
making joke of them. How I regretted!
fun
答案：
(答案→)
One day I was dining with my friend Zhou in ∧ McDonald when two young girls came in
a
hand in hand. While enjoyed a hamburger, I found Zhou looking around at something strangely.
enjoying strange
I raised my eyes to see what was happening. The two girls are making gestures skillfully.
were
Obviously they were deaf-mutes. I had learned some sign languages ago, so I showed various
before
gestures with Zhou following me in low spirits. We played and laughed cheerfully as if there had
high
∧ no one else present. Suddenly we saw both the two girls glaring at us. Before we could
been或去掉two
explain to them, they had walked out angrily, left the food unfinished. They thought we were
leaving
making joke of them. How I regretted!
fun
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