阅读对话，根据对话大意回答问题。
Joseph: Hello，my name is Joseph. Where are you from?
Andrew: Hi，I’m Andrew. I’m from the U.S. What about you?
Joseph: I’m from the U.K. This is my friend，Gao Ma.
Andrew: Nice to meet you. Where are you from？
Gao Ma: I’m from China. This is my friend，Mary.
Mary: Hello. I’m from Australia.
Andrew: Hello，Mary. Nice to meet you.
（1） Where is Andrew from?
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（2）Is Joseph from the U.S.?
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（3） Where’s Gao Ma from?
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（4） Is Mary from China?
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