Ling Ling is singing now.
She sings loudly.(特意加了个now在后面，考的肯定是动词的正在进行时；而第二句考的是动词后面加副词，把原型改成副词形式）
They talked about the film.
They talked happily.（前面提示了是yesterday,所以第一个空考的是动词的过去式；第二个问考点和上题第二问考点一样）
is playing the guitar
loudly
talked
talked happily
ling ling what are you doing now
they talk about the film
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