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is singing.
is playing the violin.
are clapping .
having
playing
singing
clapping
running
dancing
eating
writing
drinking
swimming
sound 音
form 形
meaning 意
. . .
He __ playing ping-pong.
is
She __ dancing.
is
They ___ running.
are
…ing, …ing,
I am …ing .
(He/She is ...ing .)
Doing, doing,
what ... ... doing ?
…ing, …ing,
I am …ing .