题目列表(包括答案和解析)
1. ________ May was talking on the phone, her sister walked in.
2. ________ Rita bought her new dog, it was wearing a little coat.
3. ________ I saw Carlos, he was wearing a green shirt.
4. ________ I was dancing, he was singing loudly.
5. ________ Helen came back home, her brother was watching TV.
选词填空。
My mother is a teacher ________(when, while)my father is a doctor.
选词填空。
An accident happened ________(when, while)the plane arrived at the airport.
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