When we heard the funny story we .A. were surprisedB. were worried aboutC. burst into lau

问题补充：

When we heard the funny story, we .

A. were surprised

B. were worried about

C. burst into laughter

D. couldn’t help laughing

答案：

A. were surprised

B. were worried about

(答案→)C. burst into laughter

D. couldn’t help laughing

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