问题：
根据语境，填入适当的词语或句子，补全对话。 A: 1__ ?
B: It"s a digital camera.
A: 2_ it used for?
B: It is used for taking photos.
A: 3_ your camera?
B: It"s wonderful,
A: 4___ ?
B: It was invented by an American Steven Sasson.
A: 5 ?
B: It was invented in 1975.
根据语境，填入适当的词语或句子，补全对话。 A: 1__ ?
B: It"s a digital camera.
A: 2_ it used for?
B: It is used for taking photos.
A: 3_ your camera?
B: It"s wonderful,
A: 4___ ?
B: It was invented by an American Steven Sasson.
A: 5 ?
B: It was invented in 1975.
B: It"s a digital camera.
A: 2_ it used for?
B: It is used for taking photos.
A: 3_ your camera?
B: It"s wonderful,
A: 4___ ?
B: It was invented by an American Steven Sasson.
A: 5 ?
B: It was invented in 1975.
参考答案：